Gear Boxes

[Martin]

What a straight cut box?? 1 of them 1s thaat screams or suming?


Whats the diference?
Were sells them?
Are they Worth the money?


ive got a xe'd nova btw(well wil have when its finished lol)



Cheers martin

[Stuart]

you can get a new straight cut setup from quaife or another company in the red tweeks catologue. tbh id not bother with one for an everyday car.

[Martin]

you can get a new straight cut setup from quaife or another company in the red tweeks catologue. tbh id not bother with one for an everyday car.

Ok kool whats the diference what do the do ?

[Stuart]

you can pick (genearlly) your gear ratios. and they usually wind up being very close to keep you in the narrow power band of a high revving race engine etc.

they tend to be straightcut as its easier to machine them up than helical gears.

[Martin]

alreeet cheers mate.. i'l just stick t an f20 then lol

[Nova Full]

A straight cut box will usually take more power than the equivilant vauxhall box (f15 / f20 etc) i'm sure you don't loose as much power through the transmission aswell.

theres a bit of a write up on straight cut boxes in this months total vauxhall i think

you'll be looking at circa ?3,000 for a new straight cut box

[Stuart]

its actually more like ?1500

[Martin]

meh its stil alot of money for a box lol i'l probs just stick a diff in a f20

[Gunzi]

You're both right:

http://www.quaife.co.uk/catalogue/page69.htm

The price varies depending on what spec you want.

[Stuart]

a dog box will take your wrist out if you dont treat it with respect ;)

[MARTIN KELSON]

I have a straight cut synchro Quaife F20 box. The ratio's are much closer so it stays in the power band, downside is on a motorway crusing at about 70mph your doing 4500rpm!!

A standard F20 box will loose about 25% of engine power through the transmission, where the straightcut only looses about 15%. When you have a 200bhp engine this 10% is alot to gain.

As a daily drive dont even consider it. I now drive with ear plugs as the noise from the straight cut gears.

As for cost the gear kit alone was about ?1500 + vat then you need some machineing inside the box, then put it all together. Total cost about 2-2500k!

Martin