Anyone using a Garrett GT40R ?

[20B_boy]

Cheers Ed. Do you believe the 600bhp or 500wrhp is attainable with the above set up ?

You can make 500rwhp on a T51 or GT42 with a very big non-bridged side ported motor. However, I can probably count on the fingers of one hand the number of RX7s in the UK that genuinely make that power.

I\'d honestly seriously suggest that you drive a 400rwhp RX7 before thinking about trying to push for 600hp. The costs involved in getting to 600hp for more than a couple of minutes between rebuilds is vastly different to a 400hp setup. And I said, there are very few people (tuners) in the UK that have built anything close to making that power.

Oh, and if you are even remotely contemplating trying to power map high hp cars on the road you need your head read. Its irresponsible, sooner or later this will be proven very much for the worse I fear. Fine tuning on the road after dyno time is one thing, pulling 1.6bar on the road on and off for a couple of hours while doing a complete map is going to end in a custodial at best if you\'re caught!

Good luck with it, let us have some graphs from your weekend

[Kruizer]

Cheers for the info. I doubt very much Carl would map for that power on the road hence why i\'ll be looking for a RR for one of the days

[mx1311]

nothing else to say than what everyone has already said, get yourself a ride in a 400rwhp rotary and i think you\'ll be quite suprised

colum

[shaunwil]

Is it a Roller Dyno or Hub Dyno. Seen this kind of power off a Cossie on rollers and they had over 10 people in the car trying to get it to stay on the rollers. That was 620bhp at the wheels with NOS !

You would need some serious porting too !

Shaun

[20B_boy]

Is it a Roller Dyno or Hub Dyno. Seen this kind of power off a Cossie on rollers and they had over 10 people in the car trying to get it to stay on the rollers.

Decent chassis dynos are designed such now that the harder the car pulls the more its pushed into the roller. People sitting in boots is not necessary! Look at the dyno comps they have in Aus, they manage to put down 1500hp without ppl hanging on to the rear end of it :yes

[Timmy]

Looking at the boost map peak performance for that gt40r is at approx 2.2bar which is probably where they get there 600rwhp figure from.

[arrouk]

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[20B_boy]

Looking at the boost map peak performance for that gt40r is at approx 2.2bar which is probably where they get there 600rwhp figure from.

The y axis on the compressor map indicates the pressure ratio, NOT the gauge pressure...

They get 600 rwhp from using a Dynojet.

[Kruizer]

I\'m definitely happy i bought the online membership now. Thanks everyone, your a great help to a fish out of water...

[Ed_RX7]

The y axis on the compressor map indicates the pressure ratio, NOT the gauge pressure...
 
They get 600 rwhp from using a Dynojet.

 
yep rich is spot on....seriously...forget US poewr claims...you wont see those figures over here!!!

[Ed_RX7]

Cheers Ed. Do you believe the 600bhp or 500wrhp is attainable with the above set up ?

 
witha gt40 88 with enough boost and race gas i would say yes....oh and a bridge port would be needed.
 
Witha t51 or gt42 you could do it on a BIG street port IMO

[Kruizer]

@ Ed : What would you suggest is my best option ? I want to stick with the above but maximize the performance of the car... What would be a realistic goal with porting etc ?

[Lum]

@ Lum : I was looking at a T04Z before on nengun and it works out at â,¬3,723.08 or £2852.22. Myself and a few other lads are flying Carl from Hayward Rotary over to Ireland to map our 7\'s next month hence the rush to find the right kit.

That seems pretty steep to me mate! Is that for a HKS T04Z? and is it the full turbo kit or just the turbo itself?
I\'ve got a T04Z myself, it\'s a garrett one however not the HKS one and cost less than half that!

[silverrexman]

yep rich is spot on....seriously...forget US poewr claims...you wont see those figures over here!!!

Not yet you havent,but with the development going on at the likes of dragon,you will definately see alot more 600+rwhp cars soon.Chris impey,myself and gary gooding all have well in excess of 600rwhp,such power is relatively useless in our climate,try driving with over 2 bar boost on our roads-not for the faint hearted.
KRUISER-stick with the gt40r v mount set up with the right fuelling and ignition mods it will prove an awesome allround vehicle.:wave

[Kruizer]

@ Lum : Thats for the kit using a Garrett T04Z kit.

@ Silerrexman : Cheers dude, I hope to be hitting 500rwhp and that will be ample for what i want.