adeihl

Hi guys...

I am hyundai owner and have a question for ya. I would really appreciate the help, after being on the board for a while i see you guys are really knowledgble!

I am debating using OEM material 8.5:1 pistons or 8.5:1 thicker head gasket.

I understand that legnthening the cylinder will mess with squich volume and lessen the turbulence of the compressed air. but will this really effect me ?? I am only shooting for 220 WHP max for now. nothing crazy.

Another I have reasearch... some have found a larger hear gasket to become a source of preignition. Have any of you found this to be true? I am running a t28 turbo with a Spearco 17x6x3 race core.

Here are some pics of my setup, all custom done by me... I really appreciate your help...

Thanks again,
Andrew Deihl

Casey

iTrader: (5)

i think youll be ok using either one...id try the head gasket first, and if something goes wrong, then tear the motor apart

Boosted Chemist

iTrader: (1)

i have a thicker gasket (only .043 cometic) and i havent had any detonation problems so far, tuning is the key

liam821

Ive run a thicker headgasket before. They do the job, might not be the "best" solution but do get the job done. Depending on how much thicker it is, you might need to invest in cam gears to put the cam timing back to what its supposted to be. Raising the head will through off timing.

Setup looks nice!

liam

tyrone27

how far off will it make the motor in timing

DIRep972

iTrader: (1)

I dont think for the power u r trying to make the loss of quench area is going to be a big deal. Is there a good quench area on the hyundai motor anyways?

liam821

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tyrone27 &raquo;</TD></TR><TR><TD CLASS="quote">how far off will it make the motor in timing</TD></TR></TABLE>

Depends on the height of the head gasket. Think about it this way, lets say you install a 3mm headgasket, and the stock headgasket is .50mm thick. So the head sits 2.5mm higher on the block. So pull your timing belt 2.5mm in whatever way the motor rotates and walla you have how much your timing will be off. 2.5mm is almost maybe 1/3 a tooth on a timing belt (just guessing here).

liam

DSF

I believe the rule on our Honda engines is 1 degree of timing for every .012" Shave the head and timing is retarded, raise the head (thicker gasket) and timing is advanced. That is on a Honda motor though, yours is likely reversed due to the rotation difference.

adeihl

Hey Guys... I really appreciate the help....

so the genral consencus is that the head gasket is ok?

I have 10:1 comp so 8.5:1 is a decent thickness.

thanks!
Andrew

EE_Chris

You've listed 2 cons for the headgasket and 0 for the pistons....

So why aren't you going with the pistons?

How are you addressing fueling/timing?

Since it seems put together from your pics, is it actually up and running?

SiKid86

get new pistons and rods if u can then make even more power.

adeihl

yep... it is up and running...

as you can imagine aftermarket for hyundais isnt all that great. I have 290 cc injectors in right now from a sonata.... running 4 lbs...

I just ordered 380cc's from Korea last week.. so they will be here soon..

I am using SAFC II and MSD Dis II.

I prefer the head gasket for right now because I have never built an engine before. so for me... if the headgasket is on neglagble difference in safety I would rather do that.

I am attending UTI this comming year so mabie by then I will be ready to get some forged internals and go for the gold. But that is in the future... it is my daily driver.. so I am not looking for a 300 WHP monster.

Thanks guys.... I really appreciate your input... even know I am a Hyundai guy :-P

Andrew

Charlie Moua

iTrader: (3)

WHAT KIND OF turbo comes on that turbo kit?
also what is the redline & displacement of that motor?

adeihl

Hey there... the turbo I chose to develope my kit with is a garrett t28.

.49 exhaust .80 comp.

2.0 and 6750 redline... it is the BETA II engine. silimar to older tiburons but now with a MAP sensor insted of MAF.

Thanks,
Andrew