dohc block with a sohc head

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518kyle863
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dohc block with a sohc head

Post by 518kyle863 » Sun Oct 09, 2011 8:56 pm

I built a 95 neon with a dohc block with a 03 r/t sohc head I shaved the head 40 an I got spark an got gas an the timing is dead on here's the mods I have in it #14 cam with a sohc mopar pcm under drive pulley long tube headers 60mm tb but I can't get it started it turns over nice has spark gas an timing is dead on but my coprtion is only 85 pis I need help if any one has any good tips with the set up that i have it should be about 11.16.1 compression witch should push way over 200 psi if any one can help me out that would be good thanx

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jamieely
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Post by jamieely » Sun Oct 09, 2011 10:02 pm

Sounds like bent valves. Odd for a head gasket to leak evenly across all 4 cylinders. I have dohc pistons with an unshaved head and had 235, 230, 230, 235 psi when we checked mine last spring. .040 is a lot to take off when running dohc pistons, especially if you didn't file the dome but I have heard it done without issue. I am getting ready to install a Crane 007 and the guy that did my head recommended I not mill .040 off the head with dohc pistons even though people have. 007 has the same lift as the 14 but more duration. Has it ran at all?
1995 Highline Coupe SOHC MTX.
DOHC Mopar PCM
e85, 30lb injectors, LM-1, SAFC
Custom CAI, 60mm MPx TB, AMM Box Intake, DOHC pistons, built4race UDP
PT Clutch, 3.94 FD
AF/X LTH, High Flow Cat, Spiral Flow, 2.5" piping, Flowmaster 80 series

P&P Magnum head, Crane springs, Crane 007, AEM 3-bolt cam gear almost ready to bolt on

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1genRTturbo
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Post by 1genRTturbo » Sun Oct 09, 2011 10:25 pm

holy spell check batman... of coarse, like im one to talk... if im right, the dohc pcm wont work with a magnum head will it?
It's not the fall that hurts, it's the sudden stop at the bottom!

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jamieely
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Post by jamieely » Sun Oct 09, 2011 11:59 pm

Dohc pcm will work fine with a mag head. Sensors all work the same.
1995 Highline Coupe SOHC MTX.
DOHC Mopar PCM
e85, 30lb injectors, LM-1, SAFC
Custom CAI, 60mm MPx TB, AMM Box Intake, DOHC pistons, built4race UDP
PT Clutch, 3.94 FD
AF/X LTH, High Flow Cat, Spiral Flow, 2.5" piping, Flowmaster 80 series

P&P Magnum head, Crane springs, Crane 007, AEM 3-bolt cam gear almost ready to bolt on

518kyle863
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Posts: 14
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Location: new york

Post by 518kyle863 » Mon Oct 10, 2011 2:40 pm

no it has not ran yet an its a sohc pcm not a dohc an i turned it over like 5 time by hand be for i turned it on i dont now how i would of bent all the valves like that ..every cylinder has like 85 psi

518kyle863
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Post by 518kyle863 » Mon Oct 10, 2011 2:41 pm

i was thinking the valve timing was off so i just got a aem cam gear im going to try that after i try a down leak test

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jamieely
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Post by jamieely » Mon Oct 10, 2011 9:50 pm

If the valve timing was off that far you may have some issues. Good luck. I am keping my fingers crossed for ya lol.
1995 Highline Coupe SOHC MTX.
DOHC Mopar PCM
e85, 30lb injectors, LM-1, SAFC
Custom CAI, 60mm MPx TB, AMM Box Intake, DOHC pistons, built4race UDP
PT Clutch, 3.94 FD
AF/X LTH, High Flow Cat, Spiral Flow, 2.5" piping, Flowmaster 80 series

P&P Magnum head, Crane springs, Crane 007, AEM 3-bolt cam gear almost ready to bolt on

518kyle863
1GN n00b
Posts: 14
Joined: Thu Sep 15, 2011 8:38 pm
Location: new york

Post by 518kyle863 » Mon Oct 10, 2011 10:22 pm

lol thanx ill let every one on what happens this weekend when i get time to play with it

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