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View Full Version : 2.5 piston in 2.4 block


Force Fed Mopar
08-24-2008, 07:32 PM
What compression does it give you? I can't seem to find much about this particular combo, except it gives sub-8.0 compression. What is the deck height, and how much needs to be milled off the block and/or head to bring it to normal turbo specs?
Captain Chaos
08-24-2008, 08:34 PM
Dave Boher(sp) on here is the one to contact, the diizy adapter guy. He told me once. I thinkit was low 7.2 range. But he can tell you all you are asking about.
Force Fed Mopar
08-24-2008, 09:28 PM
Ok thanks. Is that his screen-name?
Captain Chaos
08-25-2008, 09:05 AM
Yes.

http://www.turbo-mopar.com/forums/member.php?u=193
Force Fed Mopar
08-25-2008, 04:18 PM
Thanks, PM'd him. Says he was last on 2 months ago, hopefully he's still around :)
Force Fed Mopar
08-27-2008, 08:48 AM
No answer yet :(
Captain Chaos
08-27-2008, 08:51 AM
I saw the 2 month thing. Maybe send him an email instead.
Force Fed Mopar
08-27-2008, 08:47 PM
Okay, I'll try that.
Darkapollo
10-05-2008, 10:29 AM
Any updates? I have been wondering this same thing myself. I was also wondering if that was with the swirl head pistons or the Ghead pistons since the dishes are different.
crazymadbastard
10-05-2008, 10:40 AM
I was thinking of getting a set of these to run in the 2.4 but get a custom rod aluminum rod made for a long-rod 2.4 running say 9.5 compression on e85.
contraption22
10-05-2008, 12:19 PM
I was thinking of getting a set of these to run in the 2.4 but get a custom rod aluminum rod made for a long-rod 2.4 running say 9.5 compression on e85.

I'd avoid aluminium rods unless you're going class racing.
crazymadbastard
10-06-2008, 11:47 PM
Yeah, well maybe forged steel or titanium if I win powerball. How about a 318 v8 rod-aren't they pretty close to our lenght and possibly fit? I looked it up and they are 6.123 long...
bakes
10-07-2008, 01:03 AM
Yeah, well maybe forged steel or titanium if I win powerball. How about a 318 v8 rod-aren't they pretty close to our lenght and possibly fit? I looked it up and they are 6.123 long...

Stop putting ideas in my head. :eyebrows: i have to look into this for my tall deck block with 2.5 turbo pistons
glhs727
10-07-2008, 07:29 AM
When Dave used 2.5 rods and pistons in his 2.4 set-up he got some ridiculous low compression. I think it was like 7.2-1 We made him some custom pistons to bring the compression up to 8.0-1. I think we have another set on the shelf and we could make more if wanted,
later,
Cindy
turbovanmanČ
10-07-2008, 12:59 PM
Yeah, well maybe forged steel or titanium if I win powerball. How about a 318 v8 rod-aren't they pretty close to our lenght and possibly fit? I looked it up and they are 6.123 long...

They are offset due to running 2 rods on one crank throw, ala SBC, :(
crazymadbastard
10-07-2008, 01:33 PM
They are offset due to running 2 rods on one crank throw, ala SBC, :(

Don't bore me with details! I demand solutions. :p
can we get them without being side offset ground?
turbovanmanČ
10-07-2008, 02:12 PM
Don't bore me with details! I demand solutions. :p
can we get them without being side offset ground?

Sure, then your talking custom rods, :eyebrows:
crazymadbastard
10-08-2008, 12:01 PM
Sure, then your talking custom rods, :eyebrows:

Well put it this way, get the forged off the shelf pistons for the 2.5 use them in the 2.4 and get the custom rods- gotta be le$$ than getting custom rods AND pistons. Titanium would be great- I think the new corvette engine has that, hmmm.