Got Over 400kw Atw?

[sime1]

Nice power what turbo you using??

[ido09s]

So i couldnt help myself and i have spent more cash. Being delivered to me today are some ARP head studs, until now its only ever had stock head studs, and some Tomei cam cap studs, ours are really old and have been in and out a lot over the years, so i reckon they are pretty close to be stuffed.

Also very seriously considering all the flex fuel set up to keep it all in check. Would get is installed but tuned later when the bank balance recovers a bit more. At least i would have the digital read out

Chasing 550rwkw now so will also get Unigroup to put some proper E85 in the tank as opposed to E-Flex and see if we can crack it.

Its only money isnt it

499kw

tell me about it

Probably why its in hp and not kw's, i know i wouldnt want to see 499kw Oh so close to the 500kw mark

Only needs another degree of timing surely!!!!!

[Lithium]

So we went in for a quick look over of AFR's and boost control after switching to a new exhaust manifold and rear housing with V band entry and the monster spat out another 60hp. It was not expected. We did go to a slightly bigger rear housing. 1.01a/r vband entry from the old t3 .82 split pulse. Boost increased by 2psi also.

photo.JPG

Not bad for a GT35r

Impressive - what kind of "GT35R" is it, run of the mill Garrett GT?

[sime1]

Nice power dude. What turbo u using

[sky30]

So we went in for a quick look over of AFR's and boost control after switching to a new exhaust manifold and rear housing with V band entry and the monster spat out another 60hp. It was not expected. We did go to a slightly bigger rear housing. 1.01a/r vband entry from the old t3 .82 split pulse. Boost increased by 2psi also.

photo.JPG

Not bad for a GT35r

How many extra rpm is full boost with the new housing, do you have an old graph to post up?

When you say another 60hp, is that at wheels or flywheel?

Also what engine and head you using?

Edited November 27, 2013 by sky30

[r33_racer]

It's a garrett GT35r that MTA (Mr Turbo Aus @ Gold Coast) rebuilt and put his billet compressor wheel into. Its proving to be quite potent so far. Its pushing some serious flow at low pressures. On the old manifold and housing which was split pulse T3, it made about 600rwhp on 21psi. That was with the 0.82 rear which was clearly too small and choking the crap out of the engine. We just put a Modena 6 Speed Sequential box in it to replace the dead PPG gearset. Now with the sequential box, the IGN cut for flat shift has been killing the turbo gaskets!

So you see we went to v-band manifold and housing to improve reliability and in turn it made another 60rwhp. Most likely, purely because we went up in size with the rear housing, which also increased the boost by 2 psi no doubt due to less back pressure.

The engine is a Spool 3.4 Stroker with a 25 head. The lag difference was pretty well nothing. I'm not sure if I have an old dyno graph with old setup around. I will look for it though. The extra power was at the wheels too.

I am too scared to measure back pressure in the manifold...big cubes(for an RB) and small turbo, im confident the EBP will be spectacular.

Hopefully I covered everything!

[NYTSKY]

499rwkw out of a 35R at 25psi? Jeebus.

[r33_racer]

499rwkw out of a 35R at 23psi? Jeebus.

[r33_racer]

Sorry guys, just to clarify, this engine runs on methanol also.

[sky30]

It's a garrett GT35r that MTA (Mr Turbo Aus @ Gold Coast) rebuilt and put his billet compressor wheel into. Its proving to be quite potent so far. Its pushing some serious flow at low pressures. On the old manifold and housing which was split pulse T3, it made about 600rwhp on 21psi. That was with the 0.82 rear which was clearly too small and choking the crap out of the engine. We just put a Modena 6 Speed Sequential box in it to replace the dead PPG gearset. Now with the sequential box, the IGN cut for flat shift has been killing the turbo gaskets!

So you see we went to v-band manifold and housing to improve reliability and in turn it made another 60rwhp. Most likely, purely because we went up in size with the rear housing, which also increased the boost by 2 psi no doubt due to less back pressure.

The engine is a Spool 3.4 Stroker with a 25 head. The lag difference was pretty well nothing. I'm not sure if I have an old dyno graph with old setup around. I will look for it though. The extra power was at the wheels too.

I am too scared to measure back pressure in the manifold...big cubes(for an RB) and small turbo, im confident the EBP will be spectacular.

Hopefully I covered everything!

Sounds like a nice set up.

How many extra rpm to hit full boost?

[SimonR32]

It's a garrett GT35r that MTA (Mr Turbo Aus @ Gold Coast) rebuilt and put his billet compressor wheel into. Its proving to be quite potent so far. Its pushing some serious flow at low pressures. On the old manifold and housing which was split pulse T3, it made about 600rwhp on 21psi. That was with the 0.82 rear which was clearly too small and choking the crap out of the engine. We just put a Modena 6 Speed Sequential box in it to replace the dead PPG gearset. Now with the sequential box, the IGN cut for flat shift has been killing the turbo gaskets!

So you see we went to v-band manifold and housing to improve reliability and in turn it made another 60rwhp. Most likely, purely because we went up in size with the rear housing, which also increased the boost by 2 psi no doubt due to less back pressure.

The engine is a Spool 3.4 Stroker with a 25 head. The lag difference was pretty well nothing. I'm not sure if I have an old dyno graph with old setup around. I will look for it though. The extra power was at the wheels too.

I am too scared to measure back pressure in the manifold...big cubes(for an RB) and small turbo, im confident the EBP will be spectacular.

Hopefully I covered everything!

Looks nice and responsive! Is it 4.11 ratios with relatively normal sized tyres?

Just trying to get a rough gauge of road speed vs rpm

[r33_racer]

Not sure if there was any difference in rpm to achieve full boost. We were using the data logs in the ecu to determine most of everything and it looked to be much the same. To compare if anyone was interested, I am pretty sure the data log said we were making 15psi around 3200rpm and 23psi around 3600rpm.

The diff ratio is 3.7. We did runs in a few different gears to see if there was any difference as this gearbox 1:1 is 6th gear. Difference was pretty well bugger all, about 5-10 horsepower with much the same curve everywhere. I was expecting it to be alot different. I guess because the ratios are so close for 4/5 and 6th gear it ended up much the same.

The tires were 641.7mm diameter roughly. Rolling circumference 1953.13mm. I was working it out backwards this morning to see what it was roughly in engine rpm.

[Lithium]

That thing looks all out nutty man - is it in a RWD track car?

[r33_racer]

Yeh mate it's a rwd circuit car.

[sime1]

Very nice buddy looks crazy az.

[ido09s]

hp/kw wont really change with running the car in different gears, torque will though

Methanol would make a huge difference to the power as well.

I like the fuel pump setup, nice and neat

[r33_racer]

Yeh the methanol helps, but it also helps keep the temps under control. Plus it's cheap. Took a little while to nut out a good fuel system that can handle the methanol reliably. The mechanical fuel pump works a treat!

[Lithium]

Sorry guys, just to clarify, this engine runs on methanol also.

Wowwee. You are allowed that in a circuit car there?

[r33_racer]

Yeh. AASA stuff doesn't have restrictions on fuel. Only cams that doesn't allow it. It's great!

[SCR48]

Might as well post in here now..

438rwkw on 25psi. Traction issues in 4th so had to tune in 5th.

Specs:

30/25

Precision 6466

1000cc injectors

Vipec & e85