QUINN FORBES
Greendemon
Yes, bonus! Seems to be all good parts in this thing.Flattop Speed-Pro Hypereutectic Pistons H116CP!
Yes, bonus! Seems to be all good parts in this thing.Flattop Speed-Pro Hypereutectic Pistons H116CP!
Is the difference 1.660" H116CP vs 1.675" KB107*Sorry piston height not pin height
AKA kegger intake. Used on all the 90s Magnum engines.What is a "breadbox" intake?
Wow! Must have been a hangover day !My front main bearing bore was +.003 too big. inbound pistons were above deck. Worst one +.009 and outbound pistons were in the hole, both banks. Not the rods or pistons, I checked them. Must be the block deck or crank.
I’m thinking it’s the deck block but who knows. Project has stalled. Anyway I got a roller 360 block(I believe) and I’m continuing on with that.Wow! Must have been a hangover day !
Im guessing the block but since you mention it I thought it was strange that the crank wasnt turned .010 mains and rods.
All standard on this one.
Could be crank too.
My crank, mains and rods have been ground either.02 or.03 under by mopar performance. It was freshly decked as well. If I had to guess, it is the deck. Maybe got too hot while being decked and it is not flat although the finish is good. Then again it may be the crank.Wow! Must have been a hangover day !
Im guessing the block but since you mention it I thought it was strange that the crank wasnt turned .010 mains and rods.
All standard on this one.
Could be crank too.
As someone who was there, you provided interesting & accurate details. I was just trying to make sure everyone knew what it applied to and where fell into the Mopar crate motor timeline. Thanks!That is a different engine than what we were prepping and yes we were doing MAGNUM crate motors.
If I added confusion, that it is not my intention to.
Yes, I have the 1.660” pistons.Is the difference 1.660" H116CP vs 1.675" KB107
I thought I heard that KB Pistons was a supplier at one point. Mopar always shopped around.
I get about 8.9 to 1 compression with your piston and bore dimensions, a Fel Pro 4.18 bore and .048 compressed thickness head gasket, and a guess of 72cc for 596 casting head.Confusion indeed!
I have two different mopar catalogues with the same P4876908 part number.
the only difference being pin height.
Crate engine catalog states this block is 10:1 comp with cast heads (587 or 596)
The 2005 mp catalogue says 9.1:1 with the same heads.
The only difference being pin height.
My calculations tell me Im in the 9’s for compression due to the pistons at top being in the hole a c hair.
About .024 in the hole.
Maybe the Cummins built here in Canader had lower compression?
View attachment 1716064221
View attachment 1716064222
Thats about what I get using an online compression calculator.I get about 8.9 to 1 compression with your piston and bore dimensions, a Fel Pro 4.18 bore and .048 compressed thickness head gasket, and a guess of 72cc for 596 casting head.
If you do nothing but change to a Cometic head gasket with a 4.06 bore and .027 compressed thickness you are around 9.37 to 1 compression.
Then of course as the chamber gets smaller the numbers go up a little from there. Make sure you measure your chamber volume to get better numbers.
also thankyou for helping me find my own post! Hahaha, Im still figuring out stuff on this forum as I am a newbie.The sticker on mine shows remanufactured in USA. The picture of the sticker is in post 13 of the other thread, linked below.
360 crank knurling?
Thanks! Never heard it called that. LOL Mom's was rectangular, so it did not make senseAKA kegger intake. Used on all the 90s Magnum engines.
3 bolts a side and they come off.... What's the big deal?Yup, my 318 was a truck motor.. which sucks.. i wish it had the car mounts not long truck mounts
Cause i have to buy new mounts.. i'm getting tired of buying **** is all3 bolts a side and they come off.... What's the big deal?