huffandpuff00

.63 T3 is like a .86 T2. My house is larger that a t2 .64ar

slideways2004

interesting. I'm currently running a gt3071r .63 and S4 cams. The power is great once it kicks in, but I hate waiting for it.

I was thinking of changing the turbo to gt2871r t3 housing .63.

How is the spool on that compared to t25 .86 A/R

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huffandpuff00

It's hard to know the difference because a lot of things are different on my car now, but when I was running same turbo w/ T2 .86 iwg...hitting 18lbs was around 4200rpm. The actual T3 .63 house might be bigger than my housing. ATP states my housing flows like a t3

sr20det_510

hey guys so ive decided to keep my bottom end stock, not open it just yet, so im thinking of staying stock bottom since the mileage was under 30k, ported head, 264 cams, stock springs, stock valves, lifters, chain, should i do adjustable cam gears, gt2871r, ported stock intake mani, megan top mount ex mani, stock tb, 750cc injectors, 255 pump and a call in custom tune from jw, what u think reliable efficient 350ish hp setup???

EsChassisLove

Keep the stock exhaust mani and do a Cody ace external setup.

Fuck that Megan topmount shit haha

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sr20det_510

i need to run a top mount tho due to the restricted space of the 510

EsChassisLove

There's 510s here with bottom mount SR and RB26s in them. I'm sure you'll be fine

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sr20det_510

yah with rb26s you have to cut into the firewall not down..lol are top mounts that bad?? so since im not boring the block, should i still run a 1.5 apexi gasket?.. still running arp head studs and possible arp rod bolts... what u guys think?

mattsil80wis

i wouldnt even bother with porting the stock IM as that will just be a restriction in the long run. get a greddy or freddy

mattsil80wis

greddy IM
stock ex mani converted to external WG

BlackZenkiS14

Don't waste your time doing all the hardware or head gasket until it needs it. Lots of guys make 350whp with all that stuff stock.

Just leave the insides of the engine stock dude.

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-Kyle

sr20det_510

Ok thanks guys

EsChassisLove

Nah I'm sure if you brace the top mount, and have a flex pipe on your elbow the Megan will do fine.

Don't go metal head gasket on a stock bottom end with arp head studs.

Would you rather a rod go from pressure or a head gasket? Stick with OEm paper.

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sr20det_510

Lol head gasket!!! Ok stay oem but do atleast run arp head studs ?atleast

BlackZenkiS14

No! Don't take the damn thing apart. It's fine the way it is!

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sr20det_510

ok.......ok ........ i feel like i just got yelled by my dad lol, but really thanks for the 411 guys really helpful

derass

I've been searching this thread without much luck as too how far can i push the motor on a stock head gasket.

Car made 320whp at 15psi, but would like to go for 16-18psi. Using 555cc injectors, havent logged the DC's but probably getting up there.

Next stage of upgrades will be: Metal HG, Studs, Inatake Manifold, Cams and 740cc injectors. Hopefully, it will make close to 400whp at 20+ psi

Tom N

Detonation will pop a head gasket long before hp will. I dont know why anyone would crack open a factory engine to replace a head gasket that isnt blown.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

BlackZenkiS14

Bingo.

Msg length

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sr20det_510

well just thought replace it will i had the engine out

Tom N

Why? Is there something wrong with it? Your motor do what you want but I would never crack open a factory sealed motor unless I had to.

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98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98

BlackZenkiS14

These aren't 302's lol

Once you take the head off, and let the JDM fairy dust out, it'll never run good again. Fact of life.

Seriously, don't replace a head gasket until its broke.

And just so you know, if you do your wiring, fuel lines, vac lines, and install clean enough, it should only take 30-45 mintues to pull the engine and trans out...

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-Kyle

sr20det_510

This is what exactly I wanted to read thanks brother zilvians

cotbu

I'm happy too see post's like these, as they are the rules I build by.
Also we could use a head gasket database, with images to compare old, failed or just used head gaskets. MHO

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SLiDe_WaYz

You can make 400whp on the stock head gasket just fine. Been done plenty of times. Just make sure you have a good tuner. There's really no need to change your headgasket/studs until you pop the stock HG, it would kinda be a waste of money to do before hand IMO. If you have the funds for it already I would order it ahead of time that way if/when the stock HG goes. You already have ARP's and a metal HG ready to go on.

Also a intake manifold is pointless if your not making 400+. You gain top end power and lose your low end tq. (It does make your engine bay cleaner and cleans up the VAC/Fuel lines tho)

Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

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jamg

are you guys running adjustable FPR's? what is your setting at?

just picked up a nismo.

I have a walbro 255, and it's currently at stock setting. i can't check, but i have another FPR with a gauge on it. i might just hook it all up, though it's unnecessary lol.

it is one of those ebay type's, it's from DNA motoring. has a gauge so i'll at least know what PSI i'm at.

NickIsAZero

These guys are correct about the OEM head gasket, that thing will hold a hell of alot. I've been running the same SR engine for about 3yrs now with multiple different turbo setups & alot of abuse and it still keeps taking it. Have ran the T25/T28, 30R and am now currently running a 2871R. Have had issues in the past with wastegate and ran infinite boost a few pulls, some overheating issues and still this engine keeps taking it!

I know an aftermarket head gasket/studs is a great upgrade, but atleast wait till you blow yours. DON'T FIX IT IF IT AIN'T BROKE!
I'm just waiting for mine since I already have those parts on standby lol.

sr20det_510

Yah bro I agree now I see the light... I'll just save all the goodies I for when shit hits the fan

BlackZenkiS14

Or sell it all and pay for your turbo

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-Kyle

sr20det_510

There's another idea