Return Flow Coolers

[joeyjoejoejuniorshabadoo]

since i have to rebuild i'm thinking of trying to get my car as legal looking as possible and was thinking about going to a return flow cooler

can i make 300rwkw without any hastles?

[Randon_I_Am]

I've got 290rwkw with my blitz return flow...

[HEKT1K]

I reckon the Blitz one will do it no dramas... the JustJap return flow might struggle

[Harey]

I have a trust return flow intercooler and has made up to 290rwkw on the dyno without any issues. We pulled out some timing and reduced it to 279 and its been great.

The previous owner also on here made 310rwkw with it.

It seems to be a discontinued model as I cant find them still for sale anywhere. I think the blitz one will do it also.

What cooler do you have now?

[(OO)Firty Free(OO)]

Rebuild?? Please explain

Mines making 350ish on E85 with a Blitz Return Flow, its showing no signs of restriction at that level.

[Count Grantleyish]

Rebuild?? Please explain

Mines making 350ish on E85 with a Blitz Return Flow, its showing no signs of restriction at that level.

Hamish's motor may have knock from the bearing, hence he's talking about rebuilding his 25.

Harey, his FMIC is currently the one that goes through washer bottle (R33 by the way).

Hamish, you going to dirty 30 and pray Melbourne's finest doesn't pick 20mm taller motor?

[KiwiRS4T]

I was making 245awkw with the Just Jap one in my RB25DET Stagea and tuner reckoned it was getting near its limit so a better quality one should get close to 300kw OK.

[joeyjoejoejuniorshabadoo]

Hamish's motor may have knock from the bearing, hence he's talking about rebuilding his 25.

Harey, his FMIC is currently the one that goes through washer bottle (R33 by the way).

Hamish, you going to dirty 30 and pray Melbourne's finest doesn't pick 20mm taller motor?

plan at this stage is to rebuild and do the 3.0 yes.... and there is no way they will notice the extra height

currently i'm running a hybrid GT cooler

[Harey]

Any info on what happened mate? Or still a sore point

Have you decided on what turbo you will use with the 3.0L?

[Count Grantleyish]

Hamish'll be using his 2835 pro S in the 3l unless I'm wrong.

[Harey]

It would be very responsive thats for sure. Just thinking the 0.68 housing might be restrictive up top.

[R31Nismoid]

Pretty easy to work out what went wrong

15yo motor making over double the factory power...

Happened before, and will happen again!

.68 will be too small for a 3l, need a 3076 in a .82 like Al

[joeyjoejoejuniorshabadoo]

Any info on what happened mate? Or still a sore point

Have you decided on what turbo you will use with the 3.0L?

not sure really... as i was driving home (sedately) i was just ambling along in second about 50m from home and heard a slight "thunk"

i figured it was just a rock hitting the front bar so parked the car and went inside

next morning i turned the key and i could hear a faint knocking coming from the engine bay. i popped the hood and listened for the sound and it was coming from the back of the motor.

i eased on the throttle cable and the knocking got faster... i then turned the car off and it hasn't been fired up since.

oil pressure is correct, oil and water both look good, no leaks, oil level is perfect.

the plan for the 3.0 is to build a setup that will be responsive as all hell, and reliable! hence i plan to use the same turbo, even though it may be a little small, and possibly prone to creep, i think the delivery will be phenominal

[joeyjoejoejuniorshabadoo]

.68 will be too small for a 3l, need a 3076 in a .82 like Al

i dont want to make as much power as al, as i cant afford a top dollar build at the moment.

i'm planning to use the small turbo for lightning response, and sub 300rwkw for longevity

Pretty easy to work out what went wrong

15yo motor making over double the factory power...

this....

well i always said it was gonna happen eventually... and anyone that knows the car knows it had a good life.... hard... but good

[R31Nismoid]

I'm surprised it lasted as long as it did (if it has let go)

[joeyjoejoejuniorshabadoo]

mostly i'm just srprised it didn't happen banging off the limiter mid slide... it just decided one morning it had had enough lol

problem is i just wont know till it's pulled down and from that point, the difference in goin 3.o isn't all that much

[SimonR32]

not sure really... as i was driving home (sedately) i was just ambling along in second about 50m from home and heard a slight "thunk"

i figured it was just a rock hitting the front bar so parked the car and went inside

next morning i turned the key and i could hear a faint knocking coming from the engine bay. i popped the hood and listened for the sound and it was coming from the back of the motor.

i eased on the throttle cable and the knocking got faster... i then turned the car off and it hasn't been fired up since.

oil pressure is correct, oil and water both look good, no leaks, oil level is perfect.

That doesn't really sound like a big end... Sure you don't want to get it checked out before possibly forking out when it might be something fixable?

Anyhoo sucks when it happens

If I was you I'd be going another stocker RB25, so much easier than a RB30 and I bet a hell of a lot cheaper!

Edited January 4, 2011 by SimonR32

[joeyjoejoejuniorshabadoo]

what else could it be other than a bearing?

[SimonR32]

Could be heaps of things, maybe take it down to Trent or a mechanic and ask them for their opinion

Or are you just using a noise as a excuse for a upgrade

PS: To check if it's a big end you could always do a limiter skid down the road, if a rod comes out the block it's probably a big end haha

[joeyjoejoejuniorshabadoo]

trent's gonna have a listen when he's in the area next... he's heard it over the phone and said it didn't sound great...

i am of course looking for an excuse to do a 3.0 but if i can fix it for a grand i'll be going that route....

i'm not really thrilled at the idea of a kinder surprise, which is why build comes to mind i spose