Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
Join Date: Jun 2005
Location: NJ
Posts: 637
3.0 Rebuild options (track car)

Hi everyone,

I am beginning to tear down a 3.0 from a 1978 euro spec 911SC. It has been sitting for 8 yrs with 150k miles on the odometer. I intend to build the car into a street legal but dedicated track car. I'm a little new to building 911s so I was hoping for some advice. I would like to reassemble the engine and get the car running again for as little $ as possible while leaving options open for upgrading as more $ is available (i.e., invest in the internals now, but not necessarily the bolt ons yet). I'd prefer not to have to open her up again later

Initially I was thinking of investing in 98m PandCs running with the stock crank. Can this run with CIS (I can possibly covert to carbs later)? What cams would be a good solution to build in extra power but leave me some flexability in the future? What other internals would be a good idea? Is it a good idea to port polish with the enlarged cylinders?

Thanks in advance!

Brian
Old 07-06-2005, 09:52 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,720
The 3.2 SS sounds like a fantastic idea. I'd consider ditching the CIS, which after sitting will most likely require a lot of repair, for an EFI system like the one from Bitz Racing. It will be more reliable, have more tunability (supports hotter cams) and produce much better throttle response (especially for a track car). Search "Bitz EFI" for more info.
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 07-06-2005, 10:27 AM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
drag racing the short bus
 
dd74's Avatar
 
Join Date: May 2002
Location: Location, Location...
Posts: 21,980
See if TBitz's EFI can run on pistons other than CIS pistons, for which I think his EFI was designed. If you're sold on this system, much of the engine's internals as far as pistons and cams will be determined upon what Tbitz's EFI can handle.
Old 07-06-2005, 10:53 AM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,720
Quote:
Originally posted by dd74
See if TBitz's EFI can run on pistons other than CIS pistons, for which I think his EFI was designed.
It will without problems. It is fully programmable and the pistons and cam choices are essentailly limitless with this system.
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 07-06-2005, 10:56 AM
  Pelican Parts Technical Article Directory    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Jun 2005
Location: NJ
Posts: 637
That's an interesting idea. I like the idea if allows me to change my mind! How much does the EFI typically cost?
Old 07-06-2005, 02:09 PM
  Pelican Parts Technical Article Directory    Reply With Quote #5 (permalink)
3 restos WIP = psycho
 
kenikh's Avatar
 
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,720
$1600 for Tony's kit:
http://www.bitzracing.com/products/Complete_kit/index.htmlRead the

Here's the install manual, too:
http://www.bitzracing.com/docs/index.html

Simpler, better and affordable. What's better than that?
__________________

- 1965 911
- 1969 911S
- 1980 911SC Targa
- 1979 930
Old 07-06-2005, 02:12 PM
  Pelican Parts Technical Article Directory    Reply With Quote #6 (permalink)
Registered User
 
Join Date: Oct 2003
Location: Bremerton, WA
Posts: 378
I am in the same boat as you,( 1983 911sc w/80,000) I was going to rering my stock alusil pistons but changed my mind. I have allready purchased 964 cams from web cams but I want to dual plug and have at least 10.5:1 CR have you decided whos cylinders you are going to run?? ie LN engineering, max moritz???? I figure if I at least have the heads cut for dual plugs It will be avail it looks like 400 for the holes.this was only going to be a top end job but "while I am in there"
__________________
1983 911SC
1977 911S "parting out"
Old 07-06-2005, 05:18 PM
  Pelican Parts Technical Article Directory    Reply With Quote #7 (permalink)
Registered User
 
camgrinder's Avatar
 
Join Date: Feb 2004
Location: California
Posts: 921
Decide the powerband you want first. If it is for a certain track, figure out where the power should come in at and where you will be shifting and design the engine around that as best you can.
With the Cis injection the 964 cams work well as an "while your in there upgrade".
IF you have a programmable EFI the 964 cams are mild. You can run a more aggressive cam especially with 10:5-1 compression and twin plugs.
__________________
John Dougherty
Dougherty Racing Cams
Old 07-06-2005, 06:49 PM
  Pelican Parts Technical Article Directory    Reply With Quote #8 (permalink)
Registered User
 
Join Date: Jun 2005
Location: NJ
Posts: 637
I don't know if I want to go through the expense of setting up for dual plugs, but believe me it is tempting. I'm looking for the power band in the higher revs (> 3.5k). A high redline would be nice (approaching 8k) but it is not a requirement. 7k is though. Low end torque is not too much of a concern for me, luckily, because I don't think it can be had if I want to meet the other goals.

I haven't decided on pistons yet, but was originally planning on keeping the CR < 10. Alot of food for thought here...
__________________
-Brian

Last edited by bbh03; 07-06-2005 at 07:32 PM..
Old 07-06-2005, 07:26 PM
  Pelican Parts Technical Article Directory    Reply With Quote #9 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 02:18 AM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2017 Pelican Parts LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.