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View Full Version : Power Mods building block for boost questions?



GlennsEK
08-31-2011, 04:37 PM
Engine y8 bottom and z6 top
The reason I'm running y8 bottom I will be using y8 oil pump and pan.
(currently have two dip sticks looks dumb) z6 & y8

I will not boosting right away just building a block.

So far this what i have,
Arp head studs
vitara pistons
eagle rods w/ arp bolts
walbro 255
King bearing kits
330 cc injectors
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Questions?
1)what kind of intake should i use?
2)what kind of fuel rail?
3)do i need a cosmetic headgasket? if not what should i use?
4) Block guard needed?
5) what kinda of number should expect with a good tune?
IF I NEED SOMETHING ELSE OR WOULD BE A GOOD IDEA PLEASE LET ME KNOW!

GlennsEK
08-31-2011, 08:04 PM
Any ideas ?

GlennsEK
09-01-2011, 12:10 PM
No ideas ?

jcs
09-01-2011, 04:32 PM
mid 2s on those injectors maybe..its gonna be super sluggish with eagle rods...personally would have went with the fjt rods

JDMJ
09-01-2011, 05:24 PM
^ exactly right..compression will be in the 7s and 330's arent enough..ive got the fj rods, 550s and there about maxed out and im close to 300. Even with fj rods, mine is slugish..ppersonally, id get close to 9:5 area for quicker spool

GlennsEK
09-02-2011, 06:38 AM
I planned on getting some dsm 450 , I just had the 330 laying in my garage already

big mac
09-02-2011, 01:45 PM
cometic head gasket is not needed that gives lower compression oem honda head gasket is what i used on my 400 whp hathc

GlennsEK
09-02-2011, 02:12 PM
Word. Btw Kelvin you suck @ texting ppl back. I'm picking up a y8 block tomorrow. Then just want to get a cam and send the block to machine shop.

big mac
09-02-2011, 04:34 PM
i havent had a phone for like 2 weeks bro ahahahah thats why

big mac
09-02-2011, 04:34 PM
bisimoto turbo cam man 1.2 i think

Jdm94Coupe
09-03-2011, 06:41 AM
Do not do a y series bottom end. If you have the opportunity to da a z6 bottom, that's your best bet!. When I get to my computer I will respond to your questions the best I can. Phone keyboard sucks..... lol

GlennsEK
09-03-2011, 10:04 AM
true I travel a lot for work so I'm always having to use my phone keyboard, it sucks. So for the dip stick issue what can i block it with like jb weld or something that looks nice? I've heard y8 oil pump is better, is that true?

Jdm94Coupe
09-03-2011, 12:47 PM
definitely not true. everything bottom end related the z6 is better in every aspect EXCEPT for the oil dipstick being in the damn way, lol

GlennsEK
09-04-2011, 11:47 PM
Bump just brought a bisimoto 2.4 turbo cam and still need a block then I can send the block to the machine shop

Jdm94Coupe
09-05-2011, 04:51 AM
It better be a z6, and yes I'm serious. Boy I wish I could go back myself, but my sleeved block is a z6 so we will see what happens.....

GlennsEK
09-05-2011, 09:13 AM
What do you mean go back and see what happens, yes I'm trying to a z6.

Jdm94Coupe
09-05-2011, 09:57 AM
I was saying I wished I would've built a z6 or a6 instead of my y7 I built....... but gl with ur build man

GlennsEK
09-05-2011, 10:56 AM
Thanks man, hopefully I can find a block no real luck so far

green91
09-05-2011, 03:23 PM
Stock Fuel rail & intake manifold are pretty efficient until 300+hp. So they will depend on what your power goal is.

I've built several SOHC turbo setups with FELPro MLS head gaskets.. although none of them have hit the power goals you're likely looking for. IMO running a welded block guard to keep the sleeves from shifting and ARP head studs will be more relevant to the headgasket lasting than what brand you choose.

What kinda power you're gonna make is completely dependant on what turbo/psi you choose to run so thats tough to answer. Un-boosted you will make LESS horsepower than stock with vitara pistons.

Ive also used ACL duraglide bearings on all builds ive done (honda, subaru, toyota) with great success.

Jdm94Coupe
09-05-2011, 06:44 PM
i would run oem until you get bigger then 75.5mm..... my stock hg hit my old 76mm pistons..... cometic 76mm helped me out... made over 300whp and going for over 500 now, i will let u kno how it holds up.... but cometic has been good to me!