ok i have a D16 built bottom end running 22psi on 93 octane
never had a problem with over heating but after the headgasket blew once, i had the head resurfaced and they just keep blowing. i have replaced 7 headgaskets since with in a 2month period and it just blew again but now theres a whole in the head in one of the antifreeze gakets on the cylinder head. what could be wrong help please?
motor build-
cp pistons 81mm -2.5inch dp
scat h beam rods -2.5 inch side exit exhaust
darton sleeve kit - stock radiator
stock head
edelbrock intake manifold
bdl 68mm throtle body
tial 38mm wastegate
precision t67 turbo running 22psi

 

how in the hell you got 81mm pistons in a d16 and the max bore is 79mm

and you might have a sinking sleeve thats if you sleeved the block

 

i donno much about building a motor i payed 2 have it done and on my bill it says cp 81mm so i posted it and yes my block is sleeved

 

81 mm, hmm

What sort of head studs are you using. Also, how much torque are using to tighten them down?

 

arp head studs and the head is torqued down to 80fp

 

who sleeved the block?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hotrod99 &raquo;</TD></TR><TR><TD CLASS="quote">who sleeved the block?</TD></TR></TABLE>

is the deck on the block straight? how about the head? nothing is warped?

 

jk motorsports here in ct built the motor and they sleeved the block, and every time we removed the head it was resurfaced at a local machine shop. but i cant say for sure that the deck on the block is straight. i did blow the headgasket 7 times in a 2month spand but be for i blew the 1st headgasket i never had a problem

 

Call up the shop and ask them. You clearly don't know what is going on with your car. Because of this, you cannot give us an ounce of useful information. Without an ounce of useful information, we cannot give you back any useful information.

 

I'll be the first to say... timing.

Single cams have this thing with timing and lifting the head. Slap on a new headgasket and get it retuned.

 

for timing im running 16 degrees and evytime i replace the head gasket it was retuned and the timing was redone, a buddy of mine owns a shop and he is a certified hondata dealer and he tuned my car every time we replaced head gasket

 

a few people around my area said it is a coolant system problem, that i need to change all my radiator hoses and get a nice aftermarket radiator, what do u think can this b correct??

 

doesnt 91 octane and 22psi with that turbo seem odd? d-series need more octane than b-series. I wouldnt push them much more than 350whp on pump, yeah pulling timing out could help rid the problem but at that power level its more of an octane issue if your timing is where it should be. Those pressure spikes from detonation will start doing more harm that just head gaskets if you don't watch it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 &raquo;</TD></TR><TR><TD CLASS="quote">doesnt 91 octane and 22psi with that turbo seem odd? d-series need more octane than b-series. I wouldnt push them much more than 350whp on pump, yeah pulling timing out could help rid the problem but at that power level its more of an octane issue if your timing is where it should be. Those pressure spikes from detonation will start doing more harm that just head gaskets if you don't watch it.</TD></TR></TABLE>

I agree. 22psi On pump gas is a little ridiculous. I'm surprised something worse than the head gasket blowing hasn't occured. Btw, are you reusing the studs? If that is an 81mm bore, the head will probably need some work to match the overbored cylinder.

 

Jesus Christ.

1) 81mm D-series? CP Pistons? Nope. CP doesn't make 81mm D-series pistons and you can't bore a D-series block to 81mm so, yea....

2) "The timing is 16*" answers nothing. First of all, what block are you running? What head? If it's a Y8 head, your timing should be at 12* at idle. Also your timing at idle is meaningless. People need to know what your timing is at WOT.

3) T67 turbo making only 350whp at 22psi? Sounds fishy already.

The whole setup seems like a big mess. You know nothing about your car. The people working on your car know nothing about cars or they scammed you. Either way, you are in over your head. Sell your car and buy a Jetta.

I'm also half convinced this thread is by a fake poster.

 

Come on guys...22psi is not really that much boost. Think about it...a Evo runs 19-20psi. stock. I have tuned stock block Evo's at 30psi on 91 octane with stock turbo. I would personally run around 12-13 degree's of timing at 22psi Depending on the turbo...I tune most honda up to 24psi on 91 octane. Also a T67 should make more power than that, at 22psi

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">Come on guys...22psi is not really that much boost. Think about it...a Evo runs 19-20psi. stock. I have tuned stock block Evo's at 30psi on 91 octane with stock turbo. I would personally take a few degree of timing out at 22psi. Depending on the turbo...I tune most honda up to 24psi on 91 octane.</TD></TR></TABLE>

Shitty R:S, small bore, low revs....D-series suck for making power per psi and for pushing the limits of regular old gas. The only way I'd do over 350whp on a d-series engine is if the bore was bigger(this kid's bore is not 81mm) and running 8's or lower compression.

I love how you are comparing this engine to an Evo engine at 7's compression, bigger bore, higher displacement, ect. to a D-series.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nowtype &raquo;</TD></TR><TR><TD CLASS="quote">

Shitty R:S, small bore, low revs....D-series suck for making power per psi and for pushing the limits of regular old gas. The only way I'd do over 350whp on a d-series engine is if the bore was bigger(this kid's bore is not 81mm) and running 8's or lower compression.

I love how you are comparing this engine to an Evo engine at 7's compression, bigger bore, higher displacement, ect. to a D-series.</TD></TR></TABLE>
I'm not comparing motors...I'm saying 22psi is not that much boost and trust me, I know the difference between the Evo and D- series engine.

 

what kind of headgasket are you using? how much boost? how much did you torque it down to?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95exdsmkilla &raquo;</TD></TR><TR><TD CLASS="quote">what kind of headgasket are you using? how much boost? how much did you torque it down to?</TD></TR></TABLE>You didnt even bother reading the rest of the post did you?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">You didnt even bother reading the rest of the post did you? </TD></TR></TABLE>

Come on....that would make sense. We both know people have a hard time doing anything that makes sense

I'm still waiting on the solution to this one...

 

ok people no need to argue just looken for some help. ok my car made 380WHP at 17.6psi the bore size was a misprint its stock bore 9.5.1compression pistons with the stock headgasket. motor reves to 7500 just need help will post pics of the most recent headgasket and the ruined head hopefully 2nite

 

oo sorry motor is a d16y5 block and head

 

Maybe if you didn't crank the boost to 22lbs and keep on it hard, you would have the problem.

 

dude, youre detonating..

you need to be running race gas with anything over 300-350 on a d-series..

that and youre running to much timing which is also creating detonation. high horsepower d-series DO NOT like timing. for reference im running 12 degrees of timing for a year now wiht zero problems. alot of others run around 10-11 and heard of one that is running 5 degrees lol.