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vw fiend
Samba Member
Joined: April 11, 2009
Posts: 19
Location: Rocky Mountains @ 10,000 ft
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 Posted: Wed Jun 17, 2009 8:16 pm Post subject: talk type 4 tech |
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| Is the 1700, 1800, and 2000 cc case the same basic case just a bigger bore? So, like if I bore out a 1700 to 2000cc then do I then have a close to stock 2 liter? Or is the case its self bigger allowing for more material between cylinder bores? I have a CB code 1700 and I'd like a rebuilt 2000. So should I rebuild my good clean core, or do I look for a used 2 liter, say a GA code, and rebuild that? Any info would be appreciated. |
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tuna
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Joined: October 04, 2004
Posts: 475
Location: Fontana, SoCal, USA
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| Posted: Thu Jun 18, 2009 7:25 pm Post subject: |
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The crankcases are essentially the same (there are some minor differences, but nothing that affects the displacement).
The 1.7 and 1.8 use the same 66mm stroke crankshaft, whereas the 2.0 use a 71mm stroke.
The 1.7 uses 90mm pistons with the 66mm crank (90x66 = 1679cc = 1.7L).
The 1.8 uses 93mm pistons with the 66mm crank (93x66 = 1793cc = 1.8L).
The 2.0 uses 94mm pistons with the 71mm crank (94x71 = 1971cc = 2.0L).
You might want to read my web site on the Type 4 engine. I'm having some server issues at the moment, but I've mirrored it at this address:
http://www.moonrosedesigns.com/tunacannet/t4/
Tuna
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vw fiend
Samba Member
Joined: April 11, 2009
Posts: 19
Location: Rocky Mountains @ 10,000 ft
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| Posted: Thu Jun 18, 2009 9:07 pm Post subject: |
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| thanks for the info i'll check out your site |
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Chris Walden
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Joined: June 03, 2010
Posts: 147
Location: Indianapolis, Indiana
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| Posted: Mon Jun 28, 2010 4:01 pm Post subject: |
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I thought I read somewhere that one had to do some machining to fit the 71 mm crank into a non 2 liter.
Chrismo |
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raygreenwood
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Joined: November 24, 2008
Posts: 21521
Location: Oklahoma City
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| Posted: Tue Jun 29, 2010 5:20 am Post subject: |
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| No it drops right in. The machining comes when you want to use 1.7/1.8 heads to make a 2.0L. The 2.0 uses larger cylinders on the top end and they have to be fly cut. Ray |
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Chris Walden
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Joined: June 03, 2010
Posts: 147
Location: Indianapolis, Indiana
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| Posted: Tue Jun 29, 2010 3:20 pm Post subject: |
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Got it Ray.
Chrismo |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50356
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| Posted: Tue Jun 29, 2010 9:54 pm Post subject: |
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| raygreenwood wrote: |
| No it drops right in. The machining comes when you want to use 1.7/1.8 heads to make a 2.0L. The 2.0 uses larger cylinders on the top end and they have to be fly cut. Ray |
Only the 1.7 heads need machining to fit a 2.0L engine. The outside diameter of the ends of the 93 and 94mm jugs are the same.
If you have a 1.7 engine now, another alternative would be to build something like a 78mm X 90.5mm. |
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Chris Walden
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Joined: June 03, 2010
Posts: 147
Location: Indianapolis, Indiana
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| Posted: Wed Jun 30, 2010 4:27 pm Post subject: |
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So forgive if this a stu----that is, an uninformed question, but did the vanagon ever get the 2 liter and, if so, wouldn't that be a better starting point to "build" a 2 liter engine (rather than a 1.7)? Also, I've seen a 2.1 reference for the vanagon. Was that the "vasserboxer"?
Chrismo |
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Wildthings
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Joined: March 13, 2005
Posts: 50356
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| Posted: Wed Jun 30, 2010 9:35 pm Post subject: |
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A Vasserboxer (the 1.9s and the 2.1s) were wet and drippy things that were supposed to be cooled by ***gasp*** water and not air.
There if little difference between the 1700, 1800, and 2000 cases. There is the solid lifter case, the hydraulic lifter case, and the Vanagon case. Pretty much any one can be substituted for another, with minor peripheral mods. I understand that there was also an early 1700 case (1969 T-4s?) that was actually somewhat different from the later cases, but I have never seen one. |
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Lars S
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Joined: October 04, 2007
Posts: 786
Location: Sweden
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| Posted: Wed Jun 30, 2010 10:48 pm Post subject: |
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Yes, the -69 411 (before the D-jet) had another (weaker) case, the later ones are stronger thanks to "aluminum pressure casting".
/Lars S
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ubercrap
Samba Moderator
Joined: July 01, 2004
Posts: 1060
Location: Ridley Park, PA
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| Posted: Thu Jul 01, 2010 5:50 am Post subject: |
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| Lars S wrote: |
Yes, the -69 411 (before the D-jet) had another (weaker) case, the later ones are stronger thanks to "aluminum pressure casting".
/Lars S |
So originally, the Type 4 was only available with carburetors? That seems strange as VW was already using D-Jet even earlier in the Type 3. But hey, that was before I was born and we didn't even get those early cars here!
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Lars S
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Joined: October 04, 2007
Posts: 786
Location: Sweden
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| Posted: Thu Jul 01, 2010 7:57 am Post subject: |
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Yes, its a bit strange that the Type3 got the d-jet before the 411. However it is told that carbs, on request could be order even after 69. From 74 again all 412's had twin carbs except certain markets with sharp pollution laws where L-jet was used.
Lars S
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Porsche 914 -72, Bahia Red daily driver
VW411 2-d -70, White, sold
VW412 4-d, -73, Gold Metallic, daily driver
Suzuki T500, -69, Candy Gold, sold
Suzuki K50, -77, Black, daily driver
BMW R69S -69, White, sold
Husqvarna 118cc, -47, Black, Sold |
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