suprashep

Hey up peeps, as stated, first scooby I've owned, well turbo anyway... And will probably ask some standard questions u may find daft.
Just wondering.... At 70mph, where abouts should my rpm sit?
Cheers guys

BoozyDave

iTrader: (8)

depends on model/age/model spec/5 speed/6 speed

BoozyDave

iTrader: (8)

what year and model have you got?

suprashep

Good point! Know little about my car tbh apart from '94 import, 5 speed, decat from turbo

BoozyDave

iTrader: (8)

not sure about the classics, my blob wrx is just below 3k rpm at 70mph

there isn't 1 figure that it 'should' be at, just go out and do 70, that's what your car will rev at at 70, you can just about find out what gearbox you have from the rev's too (work out the final drive ratio)

BTW, I don't know much about gearbox ratio's, I'm sure someone with more knowledge will be along soon

smiffywhu

Daft question

suprashep

Cheers Dave. I have a problem with the car idling at around 1400, think possibly a dodgy home made gasket, I'll take a pic in morning, so guessing it's leaking air, maybe the pic would help further to that problem, but at 70 I'm at 3400 rpm which I find excessive but could be wrong. It screams for a 6th gear when in excess of 80 (which I rarely take it to )

suprashep

Cheers for input smiffy

joz8968

iTrader: (13)

Check your gearbox code on the VIN plate. Then you can go on Scoobypedia to find the matching gearbox code, which will give you the ratios and final drive. Then you can go on one of those calculating sites, enter the ratio(s) for 5th (and/or 4th gear), the final drive, your tyres size, and 70mph... Then you'll find your true rpm(s). Sorted.

smiffywhu

Sorry mate, bored watching England game, The smiley faces were supposed to show I was kidding with you hence using the same term you did.

joz8968

iTrader: (13)

If you give me the box's code and your tyres' size, I'll do it for you...

suprashep

I know mate got that, meant to add a smiley myself 😀

BoozyDave

iTrader: (8)

an air leak won't change the gear ratio's
it sounds like you've got a close ratio box and that sounds about right. the newage wrx has got long gears, so 500 rpm more than mine seems fine.

the impreza is a fast point to point machine and the close ratio helps with the twisties, always in the sweet spot 4k-6k rpm . longer gears are better for crusing and better mpg

suprashep

Really? Brill, cheers for that! I'll get on with it Saturday morning as I got 2 more 13 hour shifts ahead so won't get chance until then 😪

suprashep

Ahh ok making sense... Just being my first turbo I wanna keep her sweet, don't wanna run it to the ground if something ain't right. The car is my daily while the supra has some bits done. Even then still gunna be my daily. As far as I'm aware the car is totally standard apart from zaust and coilovers. No gauges, turbo timer nothing