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Sj410 converting to 5speed gearbox

Posted: Fri Oct 12, 2012 8:37 pm
by mk1joe
will i get a great advantage fitting a 5 speed gearbox to my sj410? id like better fuel economy and top speed but will it effect these massively? and are they not as well geared for off roading?
thanks for the help guys!

Re: snorkel and roof. -now gearbox mods?

Posted: Sat Oct 13, 2012 12:03 am
by dan_2k_uk
gearing is as near as makes no difference the same just with an added 5th for cruising.

should save fuel and i guess if the tyres are close to standard size it might increase the top speed a bit.

good luck finding a good one. if you find 2 let me know!

Dan

Re: snorkel and roof. -now gearbox mods?

Posted: Sat Oct 13, 2012 12:16 am
by ScottieJ
You might not get more top speed because of the lack of power from the 970cc but it will lower the rpm at higher speeds. 2nd to 4th are the same ratios in both gearboxes 1st is a tiny bit lower in the 5speed but by hardly anything.

When running 31s on my stock 410 I could never decide if it was worth it or not because of the lack of engine power but with smaller tyres I would say its definitely worth doing.

Re: snorkel and roof. -now gearbox mods?

Posted: Sat Oct 13, 2012 7:29 am
by mk1joe
awsome! although im still undecided then, is it an easy fit? i assume all 5 speeds are from the santanas? so will it go straight in my 1985 410?
cheers

Re: snorkel and roof. -now gearbox mods?

Posted: Sat Oct 13, 2012 9:10 am
by ScottieJ
As your sj is an 85 it should have the later style 4speed I think so a 5 speed should just bolt straight up?

Re: Sj410 converting to 5speed gearbox

Posted: Sat Oct 13, 2012 1:19 pm
by dazerede
I've got a 5 speed gear box in my 410 only cost me 5 pound and it was a easy fit

Re: snorkel and roof. -now gearbox mods?

Posted: Sat Oct 13, 2012 1:58 pm
by mk1joe
thanks guys, but il probably leave it for a while due to money, but mainly EFFORT. but your right it probably wouldn't effect top speed which is what i really wanted.
dan_2k_uk wrote:
good luck finding a good one. if you find 2 let me know!
theres one on ebay for £60 inc p&p, i was going to buy it but i think il focus on my snorkel for now.

http://www.ebay.co.uk/itm/SUZUKI-SJ-410 ... t_528wt_87

Re: Sj410 converting to 5speed gearbox

Posted: Sat Oct 13, 2012 2:20 pm
by dan_2k_uk
Somethings up with my phone because that listing doesent come up when I search suzuki sj gearbox!

Re: Sj410 converting to 5speed gearbox

Posted: Sat Oct 13, 2012 2:26 pm
by turbo-tom
i had a 5 speed in my sj and went back to 4 speed as i never used 5th of road. but i do think it slightly improves the mpg :D

Re: Sj410 converting to 5speed gearbox

Posted: Sat Oct 13, 2012 5:34 pm
by Darrell
dan_2k_uk wrote:Somethings up with my phone because that listing doesent come up when I search suzuki sj gearbox!

170920876860



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