Gtx3071 Install

[scotty nm35]

You fit it and I will test it. lol. pitfa to fit.

[iamhe77]

Too bad you couldn't go for a quick spin last night mate, would have been interesting to compare it now with how it was a month ago.

As an aside, just for shits and giggles, next time you get on a dyno try dropping the correction by another 20%. I'm sure that will be useful for you to compare the progress any changes have made...

Edited July 1, 2012 by iamhe77

[scotty nm35]

I agree, it doesn't help with mod progress comparisons.

20% more correction would mean 1.2 x the power figure, or 370ish. Too close to 499hp for me to try for anymore... The rods... lol.

[PN-Mad]

Out of interest, what is the top power figure for a GT3071 on an RB25, on E85?

You ran out of flow at 341kw, on an auto gearbox, right?

[sky^rkt]

good stuff scott im glad to hear it all went well you should seriously get down to calder/heathcote and see if you can improve on your time

[scotty nm35]

Out of interest, what is the top power figure for a GT3071 on an RB25, on E85?

You ran out of flow at 341kw, on an auto gearbox, right?

Not sure, I think its good for over 360 on a good setup but how often do you see the coin spent? Stock cams, manifolds and internal gates just don't cut it.

good stuff scott im glad to hear it all went well you should seriously get down to calder/heathcote and see if you can improve on your time

I will come and keep you company one cold Calder night. When is the next one?

I will need another sucker to sit in the stands, take video and freeze to death. Any takers?

[wolverine]

You fit it and I will test it. lol. pitfa to fit.

If I could get to mine easily I would do it on my car but there is no room on my setup.

[PN-Mad]

If I could get to mine easily I would do it on my car but there is no room on my setup.

I lol'd. Rb people don't know about tight spaces and packaging

Not sure, I think its good for over 360 on a good setup but how often do you see the coin spent? Stock cams, manifolds and internal gates just don't cut it.

I will come and keep you company one cold Calder night. When is the next one?

I will need another sucker to sit in the stands, take video and freeze to death. Any takers?

Mainly what I wanted to know is does the v6 have any advance over the rbs? Saw a rb25 with e85 and 26 psi go for 330kw at unigroup in the 3071 thread. I think that was a pretty good set up from what people were saying. Comparable result?

[wolverine]

I lol'd. Rb people don't know about tight spaces and packaging

You can lol but then you haven't seen a HKS low mount cast manifold with a GT30 based turbo on it which requires a shave of the engine mount (due to the lack of room) but to add insult to injury I have an ex-S1 Stagea RB25 in the R33 and the oil drain sits higher than the original block which means that there is almost no way to reconnect the drain.

I wouldn't never complain about space constraints otherwise, certainly compared to the tight packaging on VQ powered stageas.

Mainly what I wanted to know is does the v6 have any advance over the rbs? Saw a rb25 with e85 and 26 psi go for 330kw at unigroup in the 3071 thread. I think that was a pretty good set up from what people were saying. Comparable result?

The turbo was maxed out in Mick's case and seemingly on Scotty's at similar power levels so dyno-wise I think the results were comparable. To me it indicated that the compressors were maxed out. Mick's setup on E85 is a peach.

My GT3076 was stronger everywhere compared to Mick's GTX3071 on 98 ron both tuned at Unigroup which is why I still think the extra coin required for a GTX turbo doesn't get you ahead of what was already available. I am pretty sure my GT3040 would perform line ball with a GTX3076. The 82mm comp was limited on 98ron but with E85 it would make a low budget +350rwkw.

[sky^rkt]

ive entered for saturday scott

[PN-Mad]

Mmm, sounds fun. Lots of cut knuckles all round.

Scotty, I guess we will see the difference in your mph when you get it down the track again.

My 3037 is stronger nowhere.... Lol, actually, might be winning from 2500 to 3000 cause I have boost! But thats about it!

[scotty nm35]

ive entered for saturday scott

You can pre-book Calder?

Scotty, I guess we will see the difference in your mph when you get it down the track again.

My 3037 is stronger nowhere.... Lol, actually, might be winning from 2500 to 3000 cause I have boost! But thats about it!

Im keen to see the mph too, and if I can pre spool this setup.

I noticed there was a 3037 result of 360kw in RB land the other day but that was with the t3 rear, not sure what your housing is yet, perhaps it would make around the same being external gate also?

[ARTZ]

You can lol but then you haven't seen a HKS low mount cast manifold with a GT30 based turbo on it which requires a shave of the engine mount (due to the lack of room) but to add insult to injury I have an ex-S1 Stagea RB25 in the R33 and the oil drain sits higher than the original block which means that there is almost no way to reconnect the drain.

I wouldn't never complain about space constraints otherwise, certainly compared to the tight packaging on VQ powered stageas.

The turbo was maxed out in Mick's case and seemingly on Scotty's at similar power levels so dyno-wise I think the results were comparable. To me it indicated that the compressors were maxed out. Mick's setup on E85 is a peach.

My GT3076 was stronger everywhere compared to Mick's GTX3071 on 98 ron both tuned at Unigroup which is why I still think the extra coin required for a GTX turbo doesn't get you ahead of what was already available. I am pretty sure my GT3040 would perform line ball with a GTX3076. The 82mm comp was limited on 98ron but with E85 it would make a low budget +350rwkw.

Isn't Micks still internal gate on stock manifold though..stick it on a 6boob with ex gate and she could pump quite a bit more..350 maybe..

I'm rather surpised Scotts made the power it did with the auto and all..I dont know if its the larger rear housing and gate or just a dyno variance but the figure hes got now is what i would of expected from the 3071...and the figure he had before is what it should have now...

[sky^rkt]

yeh go online i pre booked

[wolverine]

Isn't Micks still internal gate on stock manifold though..stick it on a 6boob with ex gate and she could pump quite a bit more..350 maybe..

I'm rather surpised Scotts made the power it did with the auto and all..I dont know if its the larger rear housing and gate or just a dyno variance but the figure hes got now is what i would of expected from the 3071...and the figure he had before is what it should have now...

What difference does the manifold make when the compressor is maxed? I would expect it to come on earlier and hold boost better but peak power won't change.

We could sit here and wonder whether the stock manifold maxed out but then we saw a similar number on Scotty's car with a larger turbine housing.

[ARTZ]

Im not certain the compressor is maxed and that a decent manifold could quite easily allow for a little extra up top..How many 3076s make 360kw with a stock manifold on RBs, I cant think of any off hand, but there are plenty on top mounts...

So you think a larger turbine on Micks would have much effect...?

[wolverine]

A larger turbine would make it more docile everywhere and I don't think he would make any more power on E85. On 98ron for sure he would make more up top but suffer down low. When it stops making power and isn't pinging it is probably out of flow but this is just and opinion and we will need more results to know definitively.

I don't know many RB25's with GT3076 and 360rwkw but most would change the manifold when thinking about going over 300rwkw as a matter of course....then again most cars I know are run on 98ron still due to a lack of availability of E85 around here.

It will be interesting to ask a few tuners what the max of the stock manifold is with E85.

[scotty nm35]

'The compressor is maxed' equates to 'The compressor cant flow any more air in the current configuration without creating excessive heat causing loss of power.'

I think with an uncompromised setup using 3 inch short cooler pipes, the best flowing cooler around with water spray, 5 inch side pipe, screamer, ported with cams, manifold etc the 3071 may hit 400 perhaps. In the real world we are compromised obviously, noise and height restrictions, lag worries, restrictive intakes, each step back you lose power but it's a road car at the end of the day.

I like that every person craves a different setup, each build I am part of requires custom design and r+d and trialling new ideas will always be beneficial even if there are no gains.

Speaking of new ideas, this is the VQ block cooler I designed. It is similar to the 'Pathfinder" cooling bypass mod but modified to suit an easy install and fitment to any VQ block. I have been testing it out with surprising results, hopefully the logging data will show a similar lowering of temps. The main benefit of this being easy cooing system bleeding which was the main thing I was after, the thread will attach to a ball valve, to which a funnel could be added for easy filling and air purge. These cars are a pita to bleed stock and I wonder if my head gasket wouldn't have failed if this was in place oem.

I haven't worked out a final cost for it yet, I will start a thread on it soon if anyone is interested.

[iamhe77]

Oi!!

Should have some data and the other bits for you next week as I don't think I will get to install until Saturday

I'll log before putting in the Nismo though (must remember!)

[Daleo]

'The compressor is maxed' equates to 'The compressor cant flow any more air in the current configuration without creating excessive heat causing loss of power.'

I think with an uncompromised setup using 3 inch short cooler pipes, the best flowing cooler around with water spray, 5 inch side pipe, screamer, ported with cams, manifold etc the 3071 may hit 400 perhaps. In the real world we are compromised obviously, noise and height restrictions, lag worries, restrictive intakes, each step back you lose power but it's a road car at the end of the day.

I like that every person craves a different setup, each build I am part of requires custom design and r+d and trialling new ideas will always be beneficial even if there are no gains.

Speaking of new ideas, this is the VQ block cooler I designed. It is similar to the 'Pathfinder" cooling bypass mod but modified to suit an easy install and fitment to any VQ block. I have been testing it out with surprising results, hopefully the logging data will show a similar lowering of temps. The main benefit of this being easy cooing system bleeding which was the main thing I was after, the thread will attach to a ball valve, to which a funnel could be added for easy filling and air purge. These cars are a pita to bleed stock and I wonder if my head gasket wouldn't have failed if this was in place oem.

I haven't worked out a final cost for it yet, I will start a thread on it soon if anyone is interested.

Nice work mate; got to be happy when your engineering nets a good result.

I would like to see this get off the ground; it would be worthwhile for no other reason than simplifying the cooling system bleed procedure. If it improves cooling system efficiency; even better.

Edited July 2, 2012 by Daleo