Final Drive

Sun Jul 25, 2004 10:14 pm

with a rear wheel drive i know that the diff is the last reduction in the revs/min. is there a final drive in a front wheel drive or is the gear the final reduction??

Mon Jul 26, 2004 8:20 am

yes it has a diff in the gear box

Mon Jul 26, 2004 10:34 am

The diff is what makes the difference between the F5A and F8B gearbox's. Final drive on the 800 box is taller than the 550, hence why it cruises better at 100kph.

Mon Jul 26, 2004 4:08 pm

yea thats what i was thinking or even maybe because the ratio between the gears were taller... could u change the diff out of a 800 gear box to the 550 box? or does the 800's box bolt to the 550??

Mon Jul 26, 2004 4:45 pm

I think they've got the same bell-housing...

I reckon you'd be hard pressed to knock it into 4th often on an F8B 'box, though...

Mon Jul 26, 2004 5:28 pm

Josh is right, a 550 wouldn't have the puff to turn an 800 box in fourth, you'd be constantly hunting for gears - third is too short to cruise at 80kph.

Besides, the 550 box has a longer input shaft and spigot bearing, wheras the 800 does not. (Or at least that was the case for me.)

Mon Jul 26, 2004 7:28 pm

they fit ,,,it would go good on the freeway if it was flat

Mon Jul 26, 2004 8:31 pm

Don't forget the wind factor!

Mon Jul 26, 2004 11:37 pm

Does the 5 speed fit the F8 or F5 motor?

Tue Jul 27, 2004 3:46 am

I hear that it has been done, although it's a bit of work...

Tue Jul 27, 2004 11:45 am

I assume you mean fitting the Swift 5 speed box? Its a different series (G vs F) so it won't bolt up. Could possibly be done with a tricked out clutch/flywheel and input shaft though.

Josh where did you hear of the fitment being done?

Tue Jul 27, 2004 1:30 pm

When I was working full-time at SuperCheap Auto in Queanbeyan, a customer approached the front desk one day asking if the MightyBoy outside was a staff car. He was directed to me and we proceeded to have a chat about the tiny trucks. He claimed to have owned one at one point, into which he had successfully grafted the Swift 5-speed box. Said that he had the conversion done somewhere down south... Melbourne or Adelaide - I can't remember which.

He didn't sound like he was talking complete shit, unlike the hordes of other wankers I encountered through work at that point... He said he'd had a bell-housing adaptor plate manufactured somewhere but didn't go into any detail on the compatibility of the input shaft.