GT2876R (GT2540) b18c, is this to big?? (Need to know asap)

[Codeman]

Commpressor housing (cold side) says .42 A/R and the trim is .60, turbine says .65 A/R

Whats with the small Commpressor housing?
I thought the cold side would be same as garret and the other knock offs(.60 A/R) from what iv seen??

Will this hinder me? Dont know much about turbos, but will this choke it? even tho it'l only be around 190wkw..

[bumpd-EG]

I dunno why people go on about lag with a turbo honda,
i have been in evos and vr4s running gt35/40s etc and you dont feel any lag off the line??
so let alone in something that will have half the traction
honda motors are very high compression anyway and can puff out enough exhaust gases to pump a pretty big turbo

[FLYRYD]

yea my engine is about 9.2 to 1 compression, id imagine on standard compression it would boost earlier .
mine probably starts boosting 2psi under 3000rpm,

[Lith]

Originally Posted by bumpd-EG

I dunno why people go on about lag with a turbo honda, i have been in evos and vr4s running gt35/40s etc and you dont feel any lag off the line??

Off the line I assume you mean revving it up and dumping the clutch? What about just normal driving? I've been in all sorts of cars with GT3540Rs on them and the only car with one I'd say I don't feel any/much lag from down low was an F6 Typhoon with a 4litre engine. You can even feel a bit of lag with 3litres with them, on a B18C they are really laggy IMHO.

Codeman - what one did you get in the end? Some Masterpower one or something? 42a/r on the compressor sounds like a Garrett GT25 or something like that. Got pics?

[Codeman]

http://www.ncpp.co.nz/product_info.p...cd57db6992f538

Ended up getting the masterpower GT28
Plenty of cars are running the likes of these and dsr, chinese turbo's.
In my opinion the master power would be half way in between garrett and chinese shit.
Kind of like turbonetics?

Couldn't justify the xtra $ to get a garrett, over double what i paid, and i was over a grand for this.
8psi shouldn't stress the thing!!

And the turbine sise has .65A/R on it..
Will try post pics.

[Lith]

Ahh ok - sounds similar to what Skylines come with.

For future reference for people looking at getting cheap turbos, look here first:

http://www.atpturbo.com/Merchant2/me...egory_Code=TBN

Genuine Garrett plain bearing turbos are NOT that expensive, I personally would rather spend just over 1k on a well proven name - but thats just me.

[Matty]

Hey Dan did you get your turbo through them? If so how much was shipping? Just for future reference of course, looking at the you-know-what...

[bumpd-EG]

I am running the same turbo as Judd, only for the fact that I have seen his on the dyno and also he has had it goin hard for a while now, hey $550 on trade me doesnt sound that bad considering it only runs about 9 pound atm

[Codeman]

Originally Posted by Lith

Ahh ok - sounds similar to what Skylines come with.

For future reference for people looking at getting cheap turbos, look here first:

http://www.atpturbo.com/Merchant2/me...egory_Code=TBN

Genuine Garrett plain bearing turbos are NOT that expensive, I personally would rather spend just over 1k on a well proven name - but thats just me.

I paid just over 1k
$1100 to be exact.

Those garretts are $1149 usa.
Quoted $1565 for a GT2871R and $1645(i think) for GT28RS

Was thinking about going for the gt28rs but funds didn't allow it.
I wont be forging for ages so i wasn't worried about getting a turbo that i could use for both now on 8psi and later on for 18psi (example)

Il just get a bigger turbo then!
It has the same trim and turbine as the garrett GT28 turbos, just a smaller compressor housing.

Can anyone please explain what effects the compressor housing will make? Being .42 not .60 A/R that i have seen on most GT28r's

Oh, just realised you said plain bearing, not BB.

[Lith]

Originally Posted by Matty

Hey Dan did you get your turbo through them? If so how much was shipping? Just for future reference of course, looking at the you-know-what...

Yeah I got my turbo through ATPTurbo - I can't remember exactly what I paid for shipping but it did cost somewhat to get it here. You should be able to work it out - I remember rightly we used Fedex and the turbos all have the shipping weight listed.

I know I paid a bit for shipping, though it got me the turbo in 4 days from the payment being made which is pretty impressive I reckon.

Originally Posted by Codeman

Can anyone please explain what effects the compressor housing will make? Being .42 not .60 A/R that i have seen on most GT28r's

Oh, just realised you said plain bearing, not BB.

Yeah, the PLAIN BEARING turbos are comparable in price - and I assume the turbo you just bought is plain bearing too?

The .42a/r compressor housing I presume (I haven't looked into it much tbh) just bumps up the spool a bit at a cost of high end flow. Most Garrett turbos don't have different options of compressor housing so I tend to trust the compressor maps (which take housing into account) to determine the pumping ability of the turbo.

I know that Ford put a .50a/r compressor housing on their GT3582Rs they use on XR6 turbos to help wake up spool/low down torque a bit and people get the usual (for aftermarket) .70a/r housings for them when they want to make a bit more power.

[Codeman]

Originally Posted by Lith

Yeah I got my turbo through ATPTurbo - I can't remember exactly what I paid for shipping but it did cost somewhat to get it here. You should be able to work it out - I remember rightly we used Fedex and the turbos all have the shipping weight listed.

I know I paid a bit for shipping, though it got me the turbo in 4 days from the payment being made which is pretty impressive I reckon.

Yeah, the PLAIN BEARING turbos are comparable in price - and I assume the turbo you just bought is plain bearing too?

The .42a/r compressor housing I presume (I haven't looked into it much tbh) just bumps up the spool a bit at a cost of high end flow. Most Garrett turbos don't have different options of compressor housing so I tend to trust the compressor maps (which take housing into account) to determine the pumping ability of the turbo.

I know that Ford put a .50a/r compressor housing on their GT3582Rs they use on XR6 turbos to help wake up spool/low down torque a bit and people get the usual (for aftermarket) .70a/r housings for them when they want to make a bit more power.

Yes plain bearing turbo, hoping it wont make to much differance between that and a ballbearing.
But yes i never thought about plain bearing garretts..

Learn lessons as we go tho!!
Car weighs around 800kg so who cares if i get 170wkw or 200wkw.
Its still going to be mean!
Reving till around 8500, hope it just goes hard enough to that and il be happy, other wise "UPGRADE" and loose a little bit of money

Cheers for the help lith!

[agroek]

ive got a presision sc61 on a b18cr and it gets 3psi at 4500rpm and from there on it fuckin leathal makes peak power at 8k!! but it broke my diff allready ops: