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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Wed Mar 07, 2007 10:46 am Post subject: weekend driver turbo motor |
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getting ready to build a turbo motor for my ghia. I'm on a super tight budget so I'm thinking junkyard turbo with home made fuel injection.
cb has a 78.4 mm crank for $170. will it hold up?
los banditos heads. flow enough?
uni-tech rods. do I need the HD's?
90.5 or 94 p/c?
looking for drivability and will never see the track. just wanna go faster than those ricer punks. I'm planning on running 7 or 8 lbs of boost. any recomendations would be great. |
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Bashr52 Samba Member

Joined: July 16, 2006 Posts: 5669 Location: On an island in VA
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Posted: Wed Mar 07, 2007 8:35 pm Post subject: |
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Hey man where you at in upstate? I'm right outside of Binghamton. If you're close, and this is your first engine build I could help you out if you want. Or if you need some help with somethin else or whatever. Not many of us up here we gotta stick togehter! |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Thu Mar 08, 2007 5:56 am Post subject: |
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Hey neighbor! I'm in Canandaigua. I lived in binghamton a few years ago. worked at Bergers ski shop and Chenango Point Cycles. but anyway, thanks for the offer! I've re-built stock motors before just haven't built a big motor.
If I wasn't going the turbo rout I'd get ported heads and use the 94's. just not sure what would be best for turbo. reason for the turbo is I've always wanted one and I know I can do it for pretty cheap.
I really am goign to build this motor so any imput would be put to good use. please feel free to give your imput. |
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A.J.Sims Banned

Joined: December 11, 2003 Posts: 1016 Location: LowBugget.com 982 N Batavia A4 Orange Ca 92867
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Posted: Thu Mar 08, 2007 11:15 am Post subject: |
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to beat a "Ricer Punk" you can do it with a 1776cc. the big question is our you going repalce the gerbox?
a 78x90.5 or 94 (i would go 94) will make a lot of power on pump gas and will beat most any car on the street.
I dont like the Los Baditos heads for a turbo use, do to no guide boss for suport of the guide and the large 14mm plug hole. Turbo heads will see more heat than a std carb used head so keep that in mind when shopping.
Check out CB's std 044 or the new 041 casting with 12mm x 3/4" plugs, full guide boss, 40x35 and port the exhaust guide flush with the port.
Sorry no info about the Uni-tech rods. You may want to look at a rod that can take a ARP 8740 or 2000 bolt for your turbo use.  _________________ Have tech questions? Need real help? Give us a call.
www.Lowbugget.com
982 North Batavia A4, Orange Ca 92867.
68 drag bug 1915cc 10.50's @130mph
66 fastback 2387cc turbo street car
67 baja 2054cc turbo. |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Thu Mar 08, 2007 12:21 pm Post subject: |
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I've been trying to figure out how much gear box I'll need. I figured I'd bolt it to the stock one while I break in the motor. how much gearbox do you recommend?
will 94's have cooling problems?
thanks for the tip on the heads. I haven't seen the new 041 castings with 3/4 plugs. any links?
the uni-tech HD rods say ARP bolts but do not specify their grade. I'll have to look into that.
Thanks for the feedback! |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Fri Apr 06, 2007 10:33 am Post subject: |
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Quote: |
Check out CB's std 044 or the new 041 casting with 12mm x 3/4" plugs, full guide boss, 40x35 and port the exhaust guide flush with the port. |
on another forum I read that you should remove the valve guide down to the boss because it can't take the heat from the turbo. then I remembered what AJ said and wasn't sure if he said to do it due to the heat or for flow.
AJ, have you seen valve guids fail due to heat on turbo motors?
I now have an 82mm crank and and am giong with the 94's. I'll be getting a case from serranos pretty soon too. |
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A.J.Sims Banned

Joined: December 11, 2003 Posts: 1016 Location: LowBugget.com 982 N Batavia A4 Orange Ca 92867
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Posted: Fri Apr 06, 2007 12:01 pm Post subject: |
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[quote]on another forum I read that you should remove the valve guide down to the boss because it can't take the heat from the turbo. then I remembered what AJ said and wasn't sure if he said to do it due to the heat or for flow.
On the exhaust side you should port off the extra guide in the port.
AJ, have you seen valve guids fail due to heat on turbo motors?
Yes, it depends on the make of the guide, Not knowing what you have just do it!
I now have an 82mm crank and and am giong with the 94's. I'll be getting a case from serranos pretty soon too.
Build it and keep us up to date!!!!
P.S Have Fun!!!!!![quote] _________________ Have tech questions? Need real help? Give us a call.
www.Lowbugget.com
982 North Batavia A4, Orange Ca 92867.
68 drag bug 1915cc 10.50's @130mph
66 fastback 2387cc turbo street car
67 baja 2054cc turbo. |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Fri Apr 06, 2007 12:40 pm Post subject: |
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ya know, maybe I should just get the CNC Round port heads from AJ. who knows, maybe he'll even hack of the exhaust valve guides for me, or know what they are so I dont have to worry about them falling apart. I'd rather leave them in there if I could. we'll see, gotta save up some more cash.  |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Fri Apr 20, 2007 6:43 am Post subject: |
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getting ready to order everything to put together the short block. I think I've settled on getting a pair of cnc round port heads for around $600.
Next week I plan on ordering the bugpack alu case from serranos for $475 unless someone knows of a better deal.
Going with the CB unitech hd rods with ARP bolts for $140
I'm lookning for cam reccomendations. I want this to be a street car. I was thinking along the lines of the LBC3 cam and lifter combo.
one concern I have is if for some reason the EFI and Turbo doesn't work out for me, how will a turbo cam run if I thow some 44's on it? |
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dog_jr911 Swamp Donkey Assistant

Joined: May 17, 2006 Posts: 2439 Location: 2.0.9
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Posted: Fri Apr 20, 2007 9:30 am Post subject: |
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just have AJ make make you a turbo motor. will be cheaper!
 _________________ AKA Chris™
ROCKIN a ESP LTD F2E |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Fri Apr 20, 2007 9:41 am Post subject: |
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but then I don't get to build it I should look into that though. my problem is it's a lot easier for me to throw a few hundred bucks at a time at it rather than fork out twice what I payed for the car. I have a wife  |
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slovdub Samba Member
Joined: July 20, 2005 Posts: 64
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Posted: Fri Apr 20, 2007 1:27 pm Post subject: |
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juki48 wrote: |
but then I don't get to build it I should look into that though. my problem is it's a lot easier for me to throw a few hundred bucks at a time at it rather than fork out twice what I payed for the car. I have a wife  |
That's your problem right there....  |
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KennyD. Samba Member

Joined: March 08, 2003 Posts: 407 Location: Rowlett, TX
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Posted: Fri Apr 20, 2007 1:44 pm Post subject: |
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juki48 wrote: |
getting ready to order everything to put together the short block. I think I've settled on getting a pair of cnc round port heads for around $600.
Next week I plan on ordering the bugpack alu case from serranos for $475 unless someone knows of a better deal.
Going with the CB unitech hd rods with ARP bolts for $140
I'm lookning for cam reccomendations. I want this to be a street car. I was thinking along the lines of the LBC3 cam and lifter combo.
one concern I have is if for some reason the EFI and Turbo doesn't work out for me, how will a turbo cam run if I thow some 44's on it? |
Don't get the aluminum cases. They like to crack, especially with turbos. Get a AS41 mag case. _________________ 1974 Super Beetle-turbocharged 1915-mine
1974 Thing-dads |
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67Beetle2017 Samba Member
Joined: August 01, 2006 Posts: 399 Location: Pasadena CA
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Posted: Fri Apr 20, 2007 9:11 pm Post subject: |
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Yes, the engine will run with a set of 44's and a turbo cam if you should decide to axe the turbo.
Like A.J says, a 1776 is a handfull when turboed. A 78.4X94 built correctly is capable of very low 11's and street driveable. (even 10's)
Do not skimp on the heads. Get the best you can afford. That will make or break the power. It would be very wise to purchase your heads from someone who has turbo experience.
I used a well worked set of 40X37.5 heads on my old 1776 turbo which was good for 12.20's. |
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67Beetle2017 Samba Member
Joined: August 01, 2006 Posts: 399 Location: Pasadena CA
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Posted: Fri Apr 20, 2007 9:16 pm Post subject: |
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Didn't see your 7-8lb boost limit. I would use 94's with your stroker 78mm crank.
I was referring to 11's in the 1/4mi using 14-18psi.
That should be one nice streetable ghia with EFI.
Good Luck |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Sat Apr 21, 2007 4:36 pm Post subject: |
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the crank got bumped up to an 82 .
I really can't find a decent answer on the alu case. I wasn't aware that they are cracking. I'll have to figure out which case to get this week though. |
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matt davis Banned

Joined: December 01, 2003 Posts: 53 Location: Livermore, CA
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Posted: Sun Apr 22, 2007 7:55 pm Post subject: |
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juki48 wrote: |
getting ready to order everything to put together the short block. I think I've settled on getting a pair of cnc round port heads for around $600.
Next week I plan on ordering the bugpack alu case from serranos for $475 unless someone knows of a better deal.
Going with the CB unitech hd rods with ARP bolts for $140
I'm lookning for cam reccomendations. I want this to be a street car. I was thinking along the lines of the LBC3 cam and lifter combo.
one concern I have is if for some reason the EFI and Turbo doesn't work out for me, how will a turbo cam run if I thow some 44's on it? |
Go bigger on the cyl head. Thank me later. The oval port if anything, 42x37.5. FK-8 camshaft. And the Uni-Tech rods are awesome with boost, just make sure you step up for the ARP2000 rod bolt. You don't HAVE to trim the exhaust guide. But if you plan on using boost in upwards of 15+psi, I STRONGLY recommend trimming them. This particular combo in efi/boost configuration will give you years of trouble free service and make a boatload of power. If you decide to go with the 44's and off the turbo, well... the combo is already dialed in and will make awesome power in that configuration as well!
If you're looking for a trans... I just might have one. I have a customer with a brand new trans, 3.88 R&P, Weddle 1-4th gears and we could do it for $1100 shipped to you. _________________ www.mattdavisracing.com
1967 Sedan Vert
1967 Hardtop Sedan
1967 Ghia'tine Drag Car
1966 Hardtop Sedan
Livermore, CA |
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matt davis Banned

Joined: December 01, 2003 Posts: 53 Location: Livermore, CA
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Posted: Sun Apr 22, 2007 7:56 pm Post subject: |
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juki48 wrote: |
the crank got bumped up to an 82 .
I really can't find a decent answer on the alu case. I wasn't aware that they are cracking. I'll have to figure out which case to get this week though. |
I've used a BUNCH of Alum Bugpack cases, w/o any failures. Contact me if you need help with one. _________________ www.mattdavisracing.com
1967 Sedan Vert
1967 Hardtop Sedan
1967 Ghia'tine Drag Car
1966 Hardtop Sedan
Livermore, CA |
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matt davis Banned

Joined: December 01, 2003 Posts: 53 Location: Livermore, CA
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Posted: Sun Apr 22, 2007 7:58 pm Post subject: |
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KennyD. wrote: |
juki48 wrote: |
getting ready to order everything to put together the short block. I think I've settled on getting a pair of cnc round port heads for around $600.
Next week I plan on ordering the bugpack alu case from serranos for $475 unless someone knows of a better deal.
Going with the CB unitech hd rods with ARP bolts for $140
I'm lookning for cam reccomendations. I want this to be a street car. I was thinking along the lines of the LBC3 cam and lifter combo.
one concern I have is if for some reason the EFI and Turbo doesn't work out for me, how will a turbo cam run if I thow some 44's on it? |
Don't get the aluminum cases. They like to crack, especially with turbos. Get a AS41 mag case. |
Where are you getting this info? First hand experience? _________________ www.mattdavisracing.com
1967 Sedan Vert
1967 Hardtop Sedan
1967 Ghia'tine Drag Car
1966 Hardtop Sedan
Livermore, CA |
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juki48 Samba Member

Joined: March 07, 2007 Posts: 602 Location: Upstate NY
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Posted: Mon Apr 23, 2007 10:17 am Post subject: |
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Thanks for the input, I'll go as big as I can afford on the heads when I get them.
I'm thinking alu case cuz It comes all machined and ready to go for 475. It seems like the more feedback I find on alu the more comfortable I am with it.
Thanks for the FK-8 tip. (Attn AJ Sims) Are the specs available for the LBC cams? I haven't been able to find them.
I do need a gear box. haven't started that thread yet. anyone have any good articles on choosing the right combination for power and drivability? I might be very interested in the one you have Matt. |
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