28 76R On Rb20Det

[BOOZTJUNKEY]

As above

Got this ridiculously cheap gunna wack it on my rb20det I think it should be fairly responsive round the 3000-3500 rpm I will see full boost

Specs are

Ar.70 front

64 rear

How do you think it will go ?

Obviously it's gunna be an upgrade but at what power level do u think this will be come a restriction ?

What sorta boost can they run? Outta curiosity

Any info welcome

[89CAL]

step up from a disco potato

240-250rwkw?

[BOOZTJUNKEY]

What do u think mourning rear housing ? Would it choke it at all?

[zebra]

Horrible turbo.

Shit loads of lag and chockes up bad

[89CAL]

Dont know for sure, I knew a guy with a 2860rs on his rb20det and it made 240rwkw, think it was a .64

I dont think youd make much more then that but

[BOOZTJUNKEY]

Zebra- have u used this turbo before ?

89cal- I don't really want that much power I'f happy with 220 kws so that's plenty

[zebra]

Ive seen them used on SR20s...didnt come on till 4500 and fell over at 6500

Even garrett say they the 2876s are a very specific turbo.

Same compressor wheel as a GT3076 fitted with a tiny turbine.

[Dobz]

gt2876 on rb20=shit

Trust me i've been there and hated it.

A gt2860 or a hks 2530 is the way to go on an rb20.

[BOOZTJUNKEY]

That's what I thought bout the two housing they arnt matched very well :-)

Has any one had the rear housing and wheel changed on a Garret before so

Make a 2876r in to a 3076r?

[BOOZTJUNKEY]

gt2876 on rb20=shit

Trust me i've been there and hated it.

A gt2860 or a hks 2530 is the way to go on an rb20.

How bad was it lag wise ? And what sorta power did u make. At what rev range and with how much boost ?

What were ur supportin mods ?

[Simon-S14]

just get a 2871R in 52T.. much better turbo

[GTScotT]

If you got it really cheap then you may aswell give it a go.

I would get an R33 2IU rear housing and get it machined onto that CHRA by someone like Hypergear.

The reason I would do this is it will make it very easy to bolt onto the skyline. The dump pipe would line up and it would also be the T3 pattern needed to use the stock manifold. Your current housing is T2 and suits a silvia, it will cost a packet to make the adaptors and new dumps needed.

The next reason why I think this is a good idea is because if its no good the rear wheel in that turbo is identical to the GT2860RS rear wheel, so if it turns out shit you can keep your moded 2IU housing, resell the 2876 and buy a Disco Potato to whack in for some WIN!

[BOOZTJUNKEY]

Yeah that's a good Idea Scott and yeah I got it dirt cheap so no harm in trying it as for adapters and dumps etc I can make all that thanks to my trade :-)

[discopotato03]

GT2876R , imagine an obsolete HKS spec GT2540 (GT2876R really) with an older tech compressor wheel in a larger trim ie 48T vs 46T and thats what 2876Rs are .

"2540s" were never known to be responsive things and were just a step in the wrong direction in the early days of Garretts BB turbos .

Both 2510s and 2540s are no longer available and were replaced by SR20 spec GTSSs and SR or RB spec GTRSs .

A .

[limpus]

Theres your answer right there!!! ^^^^^

Not a good idea as mentioned earlier...

[discopotato03]

The issue is that they are not a good wheel match and personally I don't think its possible to work around it , not enough latitude to correct a poorly thought out unit .

The concern for me would be that RB20's are not a mountain of torque at round town revs and not getting much help from the turbo till (guesses 4000 + revs) would be disapointing .

You may be able to find another turbo and get more suitable bits from a combination of the two but than can be an expensive way to go about it . Really all thats suitable in a GT2876R is the turbine wheel/shaft because the turbine housing won't fit and the compressor and its housing are too big . Thye bearing housings front face will have been machined to take a 76mm wheel so even if you had a 60 or 71mm compressor fitted you get a step outwards from the wheel . As a minimum it would need a smaller compressor and housing and a balance all assuming the bearings and seals are good .

Hard to have a win with those GT2876Rs , cheers A .