Contour Enthusiasts Group CEG

Modifications >> Forced Induction

Pages: 1
Dan Nixon
Hard-core CEG'er

Reged: 06/09/00
Posts: 1469
Loc: Virginia
Low CR, dished pistons in SHO V8 (should fit 2.5)!
#7038 - 08/22/02 03:23 PM

OK, you FI guys might like this. I was following a link that lead to this nice page that talks about the SHO V8. The pistons are apparently dished (as opposed to Duratec domes). Now, remember the 3.4 V8 is essentially the same bore/stroke as the 2.5 with 2 extra cylinders. So I "think" the pistons (rods too) may fit the 2.5L.....If correct, this may be a cheap source of low CR factory pistons. If anybody cares..

1999 Amazon Green SVT Contour (#554/2760)

"People demand freedom of speech as a compensation for the freedom of thought which they seldom use."
-Soren Kierkegaard (as posted by Jato)

Post Extras: Print Post Remind Me! Notify Moderator

Reged: 08/16/02
Posts: 68
Loc: CT- USA
Re: Low CR, dished pistons in SHO V8 (should fit 2.5)! new
#7113 (Re: Dan Nixon) 08/22/02 04:40 PM

wow..i like that other article about the 2.5. both very interesting

AOL AIM: nerdsalot2
05 Mustang GT DropTop
98 ZJ 4.0L Limited

Post Extras: Print Post Remind Me! Notify Moderator
Redneck Troll

Reged: 06/13/00
Posts: 2621
Loc: West Des Moines, IA
Re: Low CR, dished pistons in SHO V8 (should fit 2.5)! new
#7189 (Re: JDRUID) 08/22/02 05:43 PM

If the books are right, the combustion chamber is smaller in the 3.4 V8 to bring the compression up to 10:1. The 2.5 and the SHO V8 share the same bore, stroke, rod length, and piston pin to top of piston measurements though... hummmmmmm... Time to go do some math to compare the 2.5 non SVT 9.7:1 to the 3.4 SHO 10:1...

"And I will strike down upon thee with great vengeance and furious anger those who attempt to poison and destroy my CEG brothers. And you will know I am the Moderator when I lay my vengeance upon you."

Post Extras: Print Post Remind Me! Notify Moderator
Veteran CEG'er

Reged: 07/24/00
Posts: 661
Loc: Victoria, BC, Canada
Re: Low CR, dished pistons in SHO V8 (should fit 2.5)! new
#8750 (Re: bnoon) 08/24/02 04:40 AM

The article from Road & Track says:

"Take the engine, another Ford/Yamaha joint effort that's a marvel of compactness and refinement. The steel-sleeved aluminum powerplant is space efficient out of necessity because, according to product design engineer Ted L. Byers, the V-8 had to be designed to fit the Taurus' V-6-size bay without changing any sheet metal. It's based on the Duratec 2.5-liter V-6 and shares its bore (82.4 mm), stroke (79.5 mm) and bore spacing, as well as its pistons and connecting rods. For extra rigidity, a stressed aluminum oil pan bolts to the underside of a girdle that supports the crankshaft's main bearings and forms the lower part of the block "Everything from the head gaskets down is Ford," beams Byers."


99 SVT Contour Silver Frost, #365/2760, DMD
98 Audi A4 2.8 Quattro Tiptronic, 30V -- SOLD!
91 Isuzu Impulse XS Kammback, Handling By Lotus
Victoria, BC, Canada

Post Extras: Print Post Remind Me! Notify Moderator
Pages: 1

Extra information
0 registered and 6 anonymous users are browsing this forum.


Print Thread

You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled

Thread views: 593

Jump to

Contact Us

UBB.threads™ 6.2.3

Generated in 0.038 seconds in which 0.032 seconds were spent on a total of 14 queries. Zlib compression enabled.

Copyright 1999-2005 Lance Kinley

CEG and are not affiliated with nor endorsed by Ford Motor Company