Single Turbo RX-7's Questions about all aspects of single turbo setups.

How much power would my engine make with these mods

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Old 02-18-17, 04:28 PM
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How much power would my engine make with these mods

Hi just wanted to know how much power should I be expecting to get with the following mods on my FD.

Bridge ported
Single turbo gt42
Plates and s5 rotors machined and balanced
Engine studded
Mazworx bigger throttle body
Proflow fuel rail 4x 1000cc injectors
4x Aem smart coil, 10mm leads
Micro tech lt10 ecu
3" dp and ss exhaust high flow cat
Vmount
Alloy radiator
Dual
Old 02-18-17, 05:52 PM
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It is very hard to guess where the confortable point will be.

But always easiest to see the most limiting factor, in your case injectors.

the 4 x 1000cc at 90% ( and base fuel pressure of 40 )duty will let you put down anywhere from 400-500 wheel depending on final afrs.

Then after injectors, ( say you get 2000cc secondaries ) , then next limiting factor would be fuel octane.

the GT42 breaths up top in the boost range. What fuel will you have access to, water meth , race gas , e85

Old 02-19-17, 02:33 AM
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Originally Posted by Natey
It is very hard to guess where the confortable point will be.

But always easiest to see the most limiting factor, in your case injectors.

the 4 x 1000cc at 90% ( and base fuel pressure of 40 )duty will let you put down anywhere from 400-500 wheel depending on final afrs.

Then after injectors, ( say you get 2000cc secondaries ) , then next limiting factor would be fuel octane.

the GT42 breaths up top in the boost range. What fuel will you have access to, water meth , race gas , e85

^^ Basically covers all the bases here. I will also add, your fuel pump may be of issue, but I'm sure it's covered and you just forgot to mention :P

But I agree with everything natey says/follows up with. Fuel will be a big factor, both in amount and choice/octane rating.
Old 02-20-17, 10:54 AM
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I can't take any credit. I just copy-n-pasted RX7(613)'s reply from ralph's other identical thread.

https://www.rx7club.com/rotary-car-p...-mods-1110760/
Old 02-21-17, 09:40 PM
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Oh lmao, one of these, obviously.... Should have seen it from a mile away... Derp

can't even say it's a double post, looks like the copy paste got deleted about halfway down (he did mention the fuel pumps, lol)

Even the times are HELLA off... So yeh, I vote mods simply delete this one. ahah

Last edited by Jimmy2222; 02-21-17 at 09:44 PM.
Old 02-23-17, 06:43 AM
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Sorry I had bad connection problems I didn't realise that it was a double post. But thanks for all your replies I'll post up the dyno.
Old 02-23-17, 08:01 AM
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a saw a semi peri gtx4202 on E85 get a little over 800 whp but you need way more injector flow
Old 02-23-17, 08:45 AM
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assuming your setup is built and tuned correctly my first question deals w the ultimate limiting factor: the turbo

which GT42 do you have?

GT4294

GT4202



two very different animals and animals they both are...

GT4294 8.34 compressor area 7.527 turbine

GT4202 9.72 comp 7.527 turbine

GT4294 1230 CFM 640 rotary rwhp (side intake port only)

GT4202 1374 CFM 716 rotary rwhp (side intake port only)

you currently have fuel (gas) for 411 rotary rwhp at 11.0 AFR

most of your setup looks nice, you just need to complete the fuel system.

Howard




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