Big Bore Parts ID - Need Help |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Big Bore Parts ID - Need Help |
Sailor |
Oct 10 2010, 09:33 PM
Post
#1
|
Member Group: Members Posts: 67 Joined: 17-January 10 From: Tumwater, WA Member No.: 11,247 Region Association: Pacific Northwest |
I have an older 2.5L four that I have partially diassembled in order to identify the major internal components. The PO had the motor build in the early 90's by a well respected shop in Auburn, WA. Unfortunely he could not remember all the spec's and parts that were used and the shop no longer has records from that time period. I'm thinking of selling this motor and am curious as to the quality/value of the parts. So here is what I think I know:
103 mm bore, cast iron cylinders, KB pistons, 75mm stroke (approx measure), heads have been modified with larger valves, 48mm intake, 37mm exhaust (approx measure), dual Weber 40 IDFs, 009 distibutor I am looking for help on identifying the rods, crank, and cam. Is there a way to do it without splitting the case? Thanks |
Mark Henry |
Oct 10 2010, 11:13 PM
Post
#2
|
that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Rods and crank is no way unless you take it down to the shortblock (heads and cylinders off). With just one head off you can measure the stroke.
Cam you can pull the pump and there should be a number stamped on the cam right around the pump drive. My guess is it will be a eurorace or scat cam. Post the number and I can find it for you. |
Sailor |
Oct 11 2010, 08:40 AM
Post
#3
|
Member Group: Members Posts: 67 Joined: 17-January 10 From: Tumwater, WA Member No.: 11,247 Region Association: Pacific Northwest |
Rods and crank is no way unless you take it down to the shortblock (heads and cylinders off). With just one head off you can measure the stroke. Cam you can pull the pump and there should be a number stamped on the cam right around the pump drive. My guess is it will be a eurorace or scat cam. Post the number and I can find it for you. I have one head and cylinder off as well as the oil pump. There are no markings on the cam near the pump drive. There is something stamped on the cam between the cylinder 2 and 4 lobes, however I cannot read it until I get the piston off. This has posed a problem in that I cannot see how to remove the wrist pin retainers. There are no tabs for the pliers, only slight indentations in the piston where it looks like one could pry out the retainer with a dental pick. Any suggestions? I do not want to do damage. |
Lo-Fi Version | Time is now: 10th June 2024 - 08:50 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |