GReddy T67 info please

[stevecordiner]

A 2.2 would help spool.

Hang on ... now you want 500rwhp pre nitrous ... lol. Look, you need to face the fact that quick spool and 500rwhp dont go together. You want a turbo that can flow around 550-600rwhp maximum, the reason for this is you want room for the turbo to also be able to flow out the nitrous you squirt in. Both JJ, me and James Bullock found that the ct series turbos were getting choked by nitrous at high rpm (especially James with his 125 shots lol), so you need excess capacity.

If it were me, I'd look at T78's or GT35's to I could make the region of 500rwhp but I would try and rev the engine out to 8500rpm.

[ENSMR2]

Yes maybe Im getting a bit carried away.

I dont necessarily axpect 500rwbhp just close to it like 480 or something. I'll keep on looking and see what I come up with next!!!! Twin T78s and a super charger maybe lol

[paul_h]

500 RWHP

Do you really have any idea how uncontrollable that would be on the road? I know I certainly wouldn't want one


paul

[Bender Unit]

Both JJ, me and James Bullock found that the ct series turbos were getting choked by nitrous at high rpm (especially James with his 125 shots lol), so you need excess capacity.

lol hopefully my 50mm WG and T3/T04E will help out on that front - I would love to see what 125's feel like on that sort of set up! I think from our 3 experiences the stock turbo just cant cope with anything more than say a 50bhp jet.

Personally Ens, I would look at getting a balanced 450 fwbhp or there abouts and then chuck the nitrous in on top for your ultimate figure. That way you can have a drivable car for road use and a monster for the strip. The nitrous will give you as much lbs/ft as bhp.

I.E 50bhp jets will add another 50lbs/ft - on a turbocharged engine 50bhp jets equate to considerably more power. An MR2 with a big turbo will respond even better to nitrous than it would on a stock turbo.

I ran my car on 125bhp jets and the torque in the mid range was hilarious, it would really slam you in the seat - thing is the stock turbo just couldnt cope with that much gas trying to pass through it. Thing was I could have that power for the strip and then enjoy a responsive car on the road.

You makes your choices, you pays yer money

BTW lag is all relative, just change down a gear

Regards

James

[stevecordiner]

I agree James - if people want an immediate torque hit, use the silly spray I know 75's used to really squish my guts into the seat, I dred to think what your 125's were like lol!

[JJ]

I agree James - if people want an immediate torque hit, use the silly spray I know 75's used to really squish my guts into the seat, I dred to think what your 125's were like lol!

Shows how much mechanical grip the MR2 has too with decent rubber to the rear !

[Hedgehog Dodger]

Yes maybe Im getting a bit carried away.

I dont necessarily axpect 500rwbhp just close to it like 480 or something. I'll keep on looking and see what I come up with next!!!! Twin T78s and a super charger maybe lol

480RWHP.......If you want that why not buy a car already built in japan.

T78 MONSTER

Click on the link above. This car will have about 500/550 @ fly, so should satisfy your needs!

[ENSMR2]

I was really close to doing that! but I would rather have my own built for me. I know the garage will let me "get my hands dirty" so to speak. I'd feel a sense of acomplishment. I'd know its history etc etc.

I do get tempted every so often

Dan when does you turbo start to "kick" in?

500 RWHP

Do you really have any idea how uncontrollable that would be on the road?

No

[jonno]

Just had a look. Very nice torque incline on the dyno graph.

Ideally you WANT a *smooth* fade in of torque not a step change. The sudden change in torque will make the car almost undrivable in anything lower than 4th gear. Probably "ok" on a drag strip but a real PITA on track. The torque curve should be as flat as possible for quick lap times, which is why purists always dislike turbo cars.

[stevecordiner]

Haha ... very true jonno, but if you're like me, a junky for the feeling of your eyeballs disappearing into the back of your head then a steep torque curve is what you want

My personal view is on a 2 liter turbo around 400hp is probably the maximum for a sensible track car. But if trackdays are all about fun, then who cares what your driving

[ENSMR2]

Sorry to sound dumb. But what is PITA?

What other factors will increase torque? and increase spool time?

Cams? If I had 264in cam and a 274x cam would that help spool the turbo faster? Would that mean Id have more exhaust gasses flowing out thus helping turbo spool?

Not too clued up on engines, so sorry to sound dumb once again.

[stevecordiner]

PITA - pain in the ar$e (or a type of bread that comes with kebab meat )

Spool and torque are mainly affect my compression ratio and displacement. High compression e.g. 9:1 will spool a turbo quicker. As will a larger displacement e.g. a 2.2 liter stroked engine.

Fuelling and timing can also help spool a turbo - so good tuning helps

Nitrous

I really wouldnt go with a longer duration exhaust cam on these engines.

[ENSMR2]

Cheers Steve,

Mmmmm Kebab!!! Well I am a turk lol

I'll prob stick with the 3037. Or the 3040. Hopefully Dan will tell me when the 3037 he has comes on song. That way I'll be able to make a more informed decision.

[Hedgehog Dodger]

I'll prob stick with the 3037. Or the 3040. Hopefully Dan will tell me when the 3037 he has comes on song. That way I'll be able to make a more informed decision.

If you can get to the RR then you can come out for a 'blast'!

I would say full chat on say around 3600 (ish) revs. My turbine isnt that big, so spool up is quite quick. And the compressor housing it different to the standard one.

If you look at the photo below, this is the 3037s

GT3037s

Compared to the 3040

GT3040

They are different....I have been told that this is to improve spool up time

[ENSMR2]

The 3037 looks bigger ? Or is that just the picture.

Any info on the 3040?

Yeah I'll be at the RR. Its at nobles right? Where abouts is that and what time is it and how long will it last?. Im incorporating it in to a trip to Birmingham and then to Newcastle. So I'll need to try and plan things out pretty well. I hear you have a habit of being a no show Don't let me down man.

[stevecordiner]

What are you coming up to newcastle for? Night out on the town with our loose women hahaha

Here's JJ's turbo on there



Big bad mama jama!

[ENSMR2]

The HKS site rates the 3037 up to 470 ps Fensport rates it up to 550bhp. Whats going on?

[JJ]

Here's JJ's turbo on there

you'd think for the money you pay for them, they'd at least be blinged up in some fashion... I mean open you engine bay, you see big, but you also look at it in disgust !!

Needless to say, the compressor housing will be removed and I'll have a crack at blinging it up !

[stevecordiner]

Needless to say, the compressor housing will be removed and I'll have a crack at blinging it up !

Hehe ... my T67 compressor housing is polished IIRC

[ENSMR2]

What are you coming up to newcastle for? Night out on the town with our loose women hahaha

Basically...Yes. lol No not really. Visiting a family member who's just moved up there for the above reason lol.

Any ideas on the reasson for different out puts on the HKS site to the fensport site? Could the HKS site be quoting rwhp figure?

JJ whats the one you've got. Tell me all about it. Im absorbing as much info as poss at the mo.