What can I get out of this spec list?

[Matt_K]

fly I\'d say.

[shaunwil]

Best I would say is about 280atw. Best I got out of my stock twins was 320atw with stock ports at 1bar of boost. Some heavy mods on air cooling too.

Gone Single and havn\'t really seen a huge increase but only a smallish turbo. Blitz How much would I get out of my GT3574 if I pushed the boost upto 1.4 bar ?

Shaun

[BlitzBoy]

you are on stock ports Shaun? Max with the same sort of turbo as yours on his silver car got 380atw at 0.9 BAR on a street port.

You can run your turbo up 1.2 more then that I would run Water, 1.2 BAR I reckon you will get 360-370 atw

[shaunwil]

Yep stock ports. Been looking at the smart coolingmist dual system. I\'d need some more fueling too :Giggle

Turbo\'s only a 0.84 to get earlier spool.

Cool, Rx7club says the GT3574 comes alive after 20psi !

Shaun

[Jim_rx7]

So unless I get the thing ported, then I might as well stay with the twins? Not much point in going single with stock ports?

How much would it cost to get ported? The engine\'s only been rebuilt about 2500miles ago so nothing would need replaced apart from water seals etc.

Anyone got a rough idea? Seems a bit mad taking an engine apart not long after being rebuilt though. I\'m after a rough price if anyone has any ideas?

[shaunwil]

Going single is way more reliable at higher power levels. The turbos just blow hotter air after 0.9 to 1.0bar. They don\'t always last too long either. The initial feel of a twin setup has more grunt low down but the smoothness of a single is amazing. Would give huge amounts of confidence on a trackday and on the road.

Shaun

[Jim_rx7]

Cool... think I will go single then.

When the engine needs rebuilt or if it dies for any reason, then I\'ll strip it and get porting work done.

Just seems a shame to rip apart a fine working engine on very low mileage at the moment.

[interloper393]

just buy a humped rex already converted n get it rebuilt lol, or even single rexs now are selling for peanuts

[BlitzBoy]

Cool... think I will go single then.

When the engine needs rebuilt or if it dies for any reason, then I\'ll strip it and get porting work done.

Just seems a shame to rip apart a fine working engine on very low mileage at the moment.

yep just go for the GT35 like Shaun and when it goes pop eventually in a couple of years depending on use then get it ported

[m1tch]

You could buy a blown engine, get it rebuilt (most of the cost is labour getting the engine out of the car) then port that engine, install the single turbo, swap the 2 engines over and sell the working stock engine, there are loads of people who just go the route of buying a working engine out of another car cause its cheaper than getting their own rebuilt eg Profs new engine

[shaunwil]

How much does a 2nd hand FD engine go for nowadays ?

Shaun

[Jim_rx7]

I sold my last blown one for £300

[Jim_rx7]

The car in its current setup was dyno\'d at 326bhp atw. What\'s that atf?

[shaunwil]

about 385bhp at the flywheel

Shaun