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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sat Apr 13, 2024 3:42 pm Post subject: New 70' Squareback project, the ugliest duck in town |
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Greetings VW peeps,
I just bought the worst and cheapest Squareback in California, and i love her ha. It's a 70' My knowledge is all Type 1 and Type 2, so type 3 world is new to me. For starters, Ive been hitting all the boards and reading, also yes, my manual is in the mail, I ordered one off ebay
Instead of a deep dive into simpler questions I wanted to open a basic build thread with some quick starter help questions for my build journey. Pro's, my SB is 95% rust free and solid, cons, it's a roller, and someone cut out the rear floor to get that lovely engine hatch lid, anyways, I'll be sourcing parts.
My SB came as a roller, no motor or trans, I understand that type 1 motors work, but all the tines and carb setups are different, essentially type 1 short or long block is the same?
And of course, I have no trans that came with the car, what transmissions will fit, any IRS trans ok? Or is the trans type 3 specific, or simple swaps of things like nose cone and shifter linkage and the same?
Thanks all, excited to have a new project and have some chats.
Phil |
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Glenn  Mr. 010

Joined: December 25, 2001 Posts: 80419 Location: Sneaking up behind you
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Posted: Sat Apr 13, 2024 3:56 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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the oil cooler lays down and the oil fill requires either a Type 3 case or a universal case.
The hole in the lower right is the oil fill, it's blocked off in a Type 1 application.
_________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sat Apr 13, 2024 8:58 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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Thanks Glenn,
I remember reading that somewhere about the oil fill being the main thing on the block. I'll be shopping around for options.
Can someone chime in on the trans? Will "any" IRS trans work in a type 3 Squareback, with or without subtle changes? Ive seen some deals in my areas for Bug transmissions that are later model IRS. Curious if those would work for me. |
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Tram Samba Socialist

Joined: May 02, 2003 Posts: 23022 Location: Northwest of Normal
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Posted: Sat Apr 13, 2024 9:59 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| electronictofu wrote: |
Thanks Glenn,
I remember reading that somewhere about the oil fill being the main thing on the block. I'll be shopping around for options.
Can someone chime in on the trans? Will "any" IRS trans work in a type 3 Squareback, with or without subtle changes? Ive seen some deals in my areas for Bug transmissions that are later model IRS. Curious if those would work for me. |
The other thing you need on the block is the proper drilling for the rear engine carrier bar. DO NOT use an oil pump cover adaptor with the Type 3 engine... too much weight behind it.
The Type 3 trans is dimpled differently on the hockey stick. That is easily remedied but you don't want to wind up with gear/ diff ratios that don't work well. I recommend sticking with a Type 3 gearbox. _________________ Немає виправдання для війни! Я з Україною.
| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
Those who can- do.
Those who can't? Subaru. |
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Bobnotch Samba Member

Joined: July 06, 2003 Posts: 23569 Location: Kimball, Mi
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Posted: Sun Apr 14, 2024 8:42 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| Tram wrote: |
| electronictofu wrote: |
Thanks Glenn,
I remember reading that somewhere about the oil fill being the main thing on the block. I'll be shopping around for options.
Can someone chime in on the trans? Will "any" IRS trans work in a type 3 Squareback, with or without subtle changes? Ive seen some deals in my areas for Bug transmissions that are later model IRS. Curious if those would work for me. |
The other thing you need on the block is the proper drilling for the rear engine carrier bar. DO NOT use an oil pump cover adaptor with the Type 3 engine... too much weight behind it.
The Type 3 trans is dimpled differently on the hockey stick. That is easily remedied but you don't want to wind up with gear/ diff ratios that don't work well. I recommend sticking with a Type 3 gearbox. |
I agree 100% with Tram. Since you have a 70, you need an engine case with the engine hanger bar mounts cast into it like the pic that Glen posted above. You'll also need the engine hanger bar and body side mounts for the bar. Once you get your brown Bentley, you'll see what you need, as some people have done some work arounds for worn out body side engine hanger bar mounts.
As for the trans, most any IRS trans can be used, but you'll want to stay with a later model one as the gearing is better in them (most type 3s used a 4.125:1 final gear). You do however need to run a type 3 only "hockey stick", for the shift linkage to work correctly. Many have tried the aftermarket ones only to have trouble with them as the divot in them is off (as Tram pointed out). Myself I'm running a 73 Super Beetle IRS trans in my 65 Notch, as it has 3.88:1 gearing in it. I used some Squareback engine body side brackets that were flipped over and swapped side for side to hold my engine, since my car was originally a swing axle car (I converted it to IRS). I hope this helps. _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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gt1953 Samba Member

Joined: May 08, 2002 Posts: 13958 Location: White Mountains Arizona
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Posted: Sun Apr 14, 2024 8:54 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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I would source out all type 3 stuff. A complete rebuildable engine for sure, that way you will have all of the correct tin. _________________ Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
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Braukuche Samba Member
Joined: September 03, 2004 Posts: 11231
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Posted: Sun Apr 14, 2024 9:18 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| gt1953 wrote: |
| I would source out all type 3 stuff. A complete rebuildable engine for sure, that way you will have all of the correct tin. |
Excellent advice. I spent a ton of money buying individual pieces, would have been much cheaper to have bought a complete core. _________________ Go Reds! Smash state!
Retirement is here!
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now
1989 Westfalia |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sun Apr 14, 2024 9:24 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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[quote="Tram"]
| electronictofu wrote: |
Thanks Glenn,
The other thing you need on the block is the proper drilling for the rear engine carrier bar. DO NOT use an oil pump cover adaptor with the Type 3 engine... too much weight behind it.
The Type 3 trans is dimpled differently on the hockey stick. That is easily remedied but you don't want to wind up with gear/ diff ratios that don't work well. I recommend sticking with a Type 3 gearbox. |
Thanks guys! I love building engines, its been a while so If I find one locally it might be a core, not sure if i'll have time, with all the other tasks on this build, not rushing it, but still, only so many one can do themselves. I'll look around for a good complete core, runner, or possibly a new longblock if the budget prevails.
Also, I know there are countless posts, about the Porsche engine, 914 I beleive? Which may or may not be smart for me, being that I have nothing and I am looking for something 1776 or larger, pref a 2.0 motor reliability range. So the 914 might be an option but I have alot of reading and shopping to do. |
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gt1953 Samba Member

Joined: May 08, 2002 Posts: 13958 Location: White Mountains Arizona
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Posted: Sun Apr 14, 2024 12:11 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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Since starting from scratch a type 4 engine may be your ticket...they are outthere. _________________ Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.
72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold}) |
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Tram Samba Socialist

Joined: May 02, 2003 Posts: 23022 Location: Northwest of Normal
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Posted: Sun Apr 14, 2024 2:07 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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On the other hand... if you've never experienced a stock and properly tuned / balanced FI 1600 engine... you owe yourself the experience.
One upgrade I HIGHLY recommend:
https://www.123ignitionshop.com/gb/volkswagen/267-151-vw-4-r-v-ie.html#/1-distributor_cap-straight_r
They also have a Bluetooth tunable model available but they are finicky. And... if you upgrade to Type 4 later, you can use it there, too, with either D-Jet or carbs.
The advantage of the 123 is that everything is now digital- including injector trigger points. No lag times due to cumbersome mechanics in the old distributor and no more cumbersome and expensive trigger point sets for D-Jet FI.
Their prices are in Euros and include the 19% EU VAT, so you get 19% off here in USA. They do charge a fee to process your payment (this is allowed in the EU) but shipping charges are on par with domestic shipping but shipping times to you are often faster than shipping inside of USA. Also, their communication and support is absolute top.
And no, I'm not a paid spokesperson (although maybe they should consider it!)  _________________ Немає виправдання для війни! Я з Україною.
| Bryan67 wrote: |
| Just my hands. And a little lube. No tools. |
Those who can- do.
Those who can't? Subaru. |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sun Apr 14, 2024 11:02 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| gt1953 wrote: |
| Since starting from scratch a type 4 engine may be your ticket...they are outthere. |
Yeah Ive got my eye on both options, or a few options. The 914 type 4 route is one of my top choices. |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sun Apr 14, 2024 11:03 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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Nice! I'll keep an eye on that bad boy  |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Sun Apr 14, 2024 11:08 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| Bobnotch wrote: |
As for the trans, most any IRS trans can be used, but you'll want to stay with a later model one as the gearing is better in them (most type 3s used a 4.125:1 final gear). You do however need to run a type 3 only "hockey stick", for the shift linkage to work correctly. Many have tried the aftermarket ones only to have trouble with them as the divot in them is off (as Tram pointed out). Myself I'm running a 73 Super Beetle IRS trans in my 65 Notch, as it has 3.88:1 gearing in it. I used some Squareback engine body side brackets that were flipped over and swapped side for side to hold my engine, since my car was originally a swing axle car (I converted it to IRS). I hope this helps. |
Awesome. So the later IRS gearing is 4.125:1? That's similar gearing to a bug "freeway flyer" isnt it?
Later models being what years roughly? |
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Mike Fisher Samba Member

Joined: January 30, 2006 Posts: 18052 Location: Eugene, OR
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Posted: Mon Apr 15, 2024 9:38 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| electronictofu wrote: |
| Bobnotch wrote: |
As for the trans, most any IRS trans can be used, but you'll want to stay with a later model one as the gearing is better in them (most type 3s used a 4.125:1 final gear). You do however need to run a type 3 only "hockey stick", for the shift linkage to work correctly. Many have tried the aftermarket ones only to have trouble with them as the divot in them is off (as Tram pointed out). Myself I'm running a 73 Super Beetle IRS trans in my 65 Notch, as it has 3.88:1 gearing in it. I used some Squareback engine body side brackets that were flipped over and swapped side for side to hold my engine, since my car was originally a swing axle car (I converted it to IRS). I hope this helps. |
Awesome. So the later IRS gearing is 4.125:1? That's similar gearing to a bug "freeway flyer" isnt it?
Later models being what years roughly? |
No, the 72-73 had taller 3.88 gears similar to the automatic transmission.
Might think about buying another wrecked squareback for the engine/transmission/parts you need for your 70. _________________ 69 FI/AT square Daily Driver
66 sunroof,67,70,71,71,71AT,72,72AT,73 Parts
two 57 oval ragtops sold
'68 Karmann Ghia sold
Society is like stew. If you don't keep it stirred up you end up with a lot of scum on the top! - Russ_Wolfe/Edward Abbey |
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Bobnotch Samba Member

Joined: July 06, 2003 Posts: 23569 Location: Kimball, Mi
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Posted: Mon Apr 15, 2024 1:02 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| Mike Fisher wrote: |
| electronictofu wrote: |
| Bobnotch wrote: |
As for the trans, most any IRS trans can be used, but you'll want to stay with a later model one as the gearing is better in them (most type 3s used a 4.125:1 final gear). You do however need to run a type 3 only "hockey stick", for the shift linkage to work correctly. Many have tried the aftermarket ones only to have trouble with them as the divot in them is off (as Tram pointed out). Myself I'm running a 73 Super Beetle IRS trans in my 65 Notch, as it has 3.88:1 gearing in it. I used some Squareback engine body side brackets that were flipped over and swapped side for side to hold my engine, since my car was originally a swing axle car (I converted it to IRS). I hope this helps. |
Awesome. So the later IRS gearing is 4.125:1? That's similar gearing to a bug "freeway flyer" isnt it?
Later models being what years roughly? |
No, the 72-73 had taller 3.88 gears similar to the automatic transmission.
Might think about buying another wrecked squareback for the engine/transmission/parts you need for your 70. |
Mike is correct, the 73 on beetles and supers got the 3.88:1 stock from the factory. Prior to 73 the IRS trans were 4.125:1. Most of the swing axle transmissions were 4.375:1. It might not seem like much over 10 to 15 years, but those changes did happen for fuel economy. He right about looking for a wrecked car, as it would make a great parts donor and save you money in the long run. _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Mon Apr 15, 2024 2:38 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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Oh man, any parts car is going to be better condition than what I bought haha, If I did that Id just build another car, I really bought a pile Thanks guys, I'll just make sure to get the gearbox numbers and run them, and look them up to see what year and gearing it is before buying.
So when shopping for my transmission, with these gearing changes and such, which ratio is "best" on type 3's, being that this will be a mild performance build and having owned bugs and my bus with freeway flyers, and loved those. |
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Bobnotch Samba Member

Joined: July 06, 2003 Posts: 23569 Location: Kimball, Mi
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Posted: Tue Apr 16, 2024 9:36 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| electronictofu wrote: |
Oh man, any parts car is going to be better condition than what I bought haha, If I did that Id just build another car, I really bought a pile Thanks guys, I'll just make sure to get the gearbox numbers and run them, and look them up to see what year and gearing it is before buying.
So when shopping for my transmission, with these gearing changes and such, which ratio is "best" on type 3's, being that this will be a mild performance build and having owned bugs and my bus with freeway flyers, and loved those. |
If you like the "freeway flier" trans so much, get one of those to put in it. I'm running one in my 65 Notch, and love it out on the highway (will run 75+ all day long, and get 26mpg). Around town I'm searching for the right gear for the speed I'm running, because of the choices VW put in it (73 super beetle trans). _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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SolarPoweredPickles Samba Member

Joined: May 13, 2009 Posts: 1289 Location: California
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Posted: Tue Apr 16, 2024 1:26 pm Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| Bobnotch wrote: |
| electronictofu wrote: |
Oh man, any parts car is going to be better condition than what I bought haha, If I did that Id just build another car, I really bought a pile Thanks guys, I'll just make sure to get the gearbox numbers and run them, and look them up to see what year and gearing it is before buying.
So when shopping for my transmission, with these gearing changes and such, which ratio is "best" on type 3's, being that this will be a mild performance build and having owned bugs and my bus with freeway flyers, and loved those. |
If you like the "freeway flier" trans so much, get one of those to put in it. I'm running one in my 65 Notch, and love it out on the highway (will run 75+ all day long, and get 26mpg). Around town I'm searching for the right gear for the speed I'm running, because of the choices VW put in it (73 super beetle trans). |
Thanks Im shopping around, I found a couple guys locally that have T3 cores for a couple hundred bucks, that may or may not need rebuild. Id assume so. Im curiouus, since I have no trans or axels, could I easily convert to a type 1 swing axle trans instead of IRS? They are jusy easier to find and I have more experience with swing axles.
Also, since I am lowering my car if swing axles are shorter in length that may help me with tire clearance and potential rubbing issues. |
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Bobnotch Samba Member

Joined: July 06, 2003 Posts: 23569 Location: Kimball, Mi
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Posted: Wed Apr 17, 2024 11:21 am Post subject: Re: New 70' Squareback project, the ugliest duck in town |
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| electronictofu wrote: |
| Bobnotch wrote: |
| electronictofu wrote: |
Oh man, any parts car is going to be better condition than what I bought haha, If I did that Id just build another car, I really bought a pile Thanks guys, I'll just make sure to get the gearbox numbers and run them, and look them up to see what year and gearing it is before buying.
So when shopping for my transmission, with these gearing changes and such, which ratio is "best" on type 3's, being that this will be a mild performance build and having owned bugs and my bus with freeway flyers, and loved those. |
If you like the "freeway flier" trans so much, get one of those to put in it. I'm running one in my 65 Notch, and love it out on the highway (will run 75+ all day long, and get 26mpg). Around town I'm searching for the right gear for the speed I'm running, because of the choices VW put in it (73 super beetle trans). |
Thanks Im shopping around, I found a couple guys locally that have T3 cores for a couple hundred bucks, that may or may not need rebuild. Id assume so. Im curiouus, since I have no trans or axels, could I easily convert to a type 1 swing axle trans instead of IRS? They are jusy easier to find and I have more experience with swing axles.
Also, since I am lowering my car if swing axles are shorter in length that may help me with tire clearance and potential rubbing issues. |
To convert to swing axle, you'd need to find a pre-68 type 3 rear subframe to bolt in. This would allow you to use a t-1 swing axle trans and axles. Watch the axles though, as there are long-long for a type3 and some bugs, long-short and short-short for bugs out there, and if you end up using the short spline end you'll need to machine 14mm of the hub to use them. T-3 brakes are the largest offered on a VW except a type 4 (411/412) as they use the same rear brakes.
If you keep it IRS, you'll need some IRS bug axles and CV joints along with the bolts, washers and curved plates to bolt them in (both a bug and type 3 use the same IRS parts.
Now lowering a type 3 is a whole other can of worms, that you can quickly get into trouble. Going with short swing axles pull the tire inward, and you start running into things, like the snubber and mount, the inner fender assembly, and things like that in the rear.
The big things to watch when dropping are rim width and off set, along with tire size. I hope this helps. _________________ Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
| Tram wrote: |
| "Friends are God's way of apologizing for relatives." |
| Tram wrote: |
| People keep confusing "restored" and "restroyed". |
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