2.0 Crank on Ebay

[Shadow16V]

http://cgi.ebay.com/ebaymotors/ws/eB...MakeTrack=true

For the life of me I can not find my MP catalogs since I've moved. Can anyone tell me if this is a 6 bolt or 8 bolt crankshaft?

Thanks

[4 L-bodies]

Ben,
It does not say if it's six or eight in the catalog. I'm assuming eight since it came out around 1991. Cindy should be able to answer this since it's her head. The other question is early or common block? If common block, then eight for sure.

[slasky]

according to this site that sells them it is an eight bolt.

http://www.flatlanderracing.com/cranksmopar25.html

[cj011]

Is this the 2.7 stroker crank for the common block : 3.994" Stroke
I noticed that they had this listed as well.

[4 L-bodies]

Quote:

Originally Posted by cj011 Is this the 2.7 stroker crank for the common block : 3.994" Stroke I noticed that they had this listed as well.

I believe the 3.994 would be a 2.5. Actually it is slightly smaller than the production 2.5 crank. Cool piece though. Probably not many forged crank 2.5 motors running around (or 2.0 motors for that matter).
The 2.7 motor used a 4.250 stroke. Billet custom made crank from Callis. I very spendy piece. It was like $2700!

[Reaper1]

I'd HATE to know what the rod ratio was for that thing....

[cj011]

But add a plate to the top of the deck, and the 4.250 crank will end up with a descent rod ratio. Big hurdles are almost 3 grand for the crank and another thousand for the block work. The list just never ends

[Reaper1]

Then finding a timing belt that will work, the right head bolts/studs, ect. ect.. IMHO that venture wouldn't be worth it....

[4 L-bodies]

Quote:

Originally Posted by Reaper1 I'd HATE to know what the rod ratio was for that thing....

That's the beauty of it. 2.5 tall block = .500 taller deck and all the strength of the common block.

[xjjunkie]

is the tall deck 2.5 block, just as strong as the common block ?

scot

[4 L-bodies]

Quote:

Originally Posted by xjjunkie is the tall deck 2.5 block, just as strong as the common block ? scot

Some might argue stronger! Cylinder walls thicker, and has the webbing of common block. Taller deck to boot.

[Koreth]

Quote:

Originally Posted by 4 L-bodies I believe the 3.994 would be a 2.5. Actually it is slightly smaller than the production 2.5 crank. Cool piece though. Probably not many forged crank 2.5 motors running around (or 2.0 motors for that matter). The 2.7 motor used a 4.250 stroke. Billet custom made crank from Callis. I very spendy piece. It was like $2700!

running the numbers through the calculator, it comes out to 148 cuid or 2433 ccd. So a 2.4L. So that would have a SLIGHTLY better rod ratio than the commonblck 2.5 if used in a commonblock with commonblock pistons.

[86Shelby]

Now to use that 2.0 crank, which would be easier to do.... get a set of custom rods made or get custom pistons? I wouldn't mind dropping the coin on one to try it out if I could figure out how much the corresponding rods/pistons will lighten my wallet.

And they list that crank as being intended for 81-89 blocks. the '89s are common blocks and the snout is different. anyone know for sure which blocks those cranks are compatible with? (I'm lazy and haven't e-mailed them.)

The stroke for a 2.5 is I believe 4.06" or there abouts. So that slightly better rod ratio certainly is on the smaller side of slightly.

[89acclaim]

The 2.5L has a 4.09" stroke, the 2.0L crank on ebay looks like a pre-commonblock crank. Take a look at it vs the cranks here. http://www.turbododge.com/forums/sho...60&postcount=8
If you wanted the pin height to be the same, you would have to use rods with about a length of 152.276mm. That is for a standard 2.2 with 2.2 pistons. I bet that the 2.0L crank could work in the 2.5 tallblock. With turbo 2.5 pistons and the 2.0L crank in the tallblock you would need rods around 170.276mm. All of the measurements aren't too accurate, I did them completely negating the dish in the pistons. I hope that helped you some.

Daniel Merrill

[86Shelby]

thanks 89acclaim for the info and comparison reference!