OK GEAR GURU"S HELP ME OUT

[mud4b]

ive done the search and found it but i dont understand it.......can some one find out if the spook will be fine on road with the following;

4.88 diff ratio
series 3 rockhopper
33 baja claws
std sierra 5 speed
vitara 1.6 efi.

any help is good........

thanks mark..

[N*A*M]

yes it will be fine

[greg]

Okay,

Your final crawl ratio will be:

1st x Low Range x Diffs
= 4.1 x 6.1 x 4.88
= 122:1

So it will definately crawl like mad.

As for highway gearing, I estimate that you will be reving between 4,000 and 5,000rpms to be doing 100kms... (this is based upon what my car does with a cap g'box, 6:1 hopper, 5.12's and 34's, and what droopy pete's does with sierra g'box, 6:1 hopper, 5.12's and 33 claws)...

Something to note is that 33" claws tend to measure quite short and are probably closer to 31" so you will have to measure that to work out your speedo and road speeds.

Cheers

[Damo]

Well, I think it really depends on what RPMs you want to run on the highway, but it seems to me to be a good setup.

Assuming your 33s measure 32.5 (which i think is generous) you'll be spinning a little over 4200RPM at 100kph. Maybe a little on the high side so fuel economy will suffer (will be sh1t anyway) but it's right in the torque range for that engine.

BTW, crawl ratio is about 108:1

[Damo]

1st x Low Range x Diffs
= 4.1 x 6.1 x 4.88
= 122:1
Cheers

Since when is 1st gear on a stock 5 speed 4.1:1?

[mud4b]

cool thanks people...

maybe i should go 35s then they might be close to 33s.

[greg]

1st x Low Range x Diffs
= 4.1 x 6.1 x 4.88
= 122:1
Cheers

Since when is 1st gear on a stock 5 speed 4.1:1?

Sorry man, I had my bling goggles on for a second and mixed my numbers up - the japanese Jimny with the 660 comes with a 4.1 1st gear...

Alas - but 108:1 is still sweet I'm thinking - particularly with the might of the 1.6 in front of it.

[mud4b]

sweet so it should be a goer.....if i can sell the mighty boy.....

[Damo]

1st x Low Range x Diffs
= 4.1 x 6.1 x 4.88
= 122:1
Cheers

Since when is 1st gear on a stock 5 speed 4.1:1?

Sorry man, I had my bling goggles on for a second and mixed my numbers up - the japanese Jimny with the 660 comes with a 4.1 1st gear...

Alas - but 108:1 is still sweet I'm thinking - particularly with the might of the 1.6 in front of it.

To be honest 108 vs. 122 is SFA difference. I was just being a jackass

Something different...



Mark, go the 35s!!!

[greg]

I was just being a jackass

I figured as much.

Don't you have some chrome to go polish or something?

[Damo]

Yes, my stainless mandrel exhaust is a little tarnished

[mud4b]

[mud4b]

35s are only $50 more than 33s but i dont think ill get away with it.....

im looking at a set of 37s second hand for very CHEAP as play tyres......

[Damo]

Fair enough! I think you will be pushing sh1t uphill to be engineered with 33s as road tyres though...

[mud4b]

maybe not.........hilux diffs can run up to 32.8(i think)legally so im thinking if i do that and get the tyre placard changed it should be cool.......

if it works

31s are illegel on a spook anyway so i guess ill just get busted either way...

[bella]

it will scream its ring off on the road mine does with 35s

[mud4b]

what spec is yours?

[bubs]

go with a 4.5 ratio diff, cheepest lo-pinon you will find, and you can it is easier to find a matching hy-pinon

have fun trying to find a hy-pinon 4.88

[mud4b]

hmmm ok then so can someone work it out using the above ratio.....




thanks bubs,just ruin my plans...

[greg]

hmmm ok then so can someone work it out using the above ratio.....

(108 / 4.88) x 4.5 = 99:1 ish...

[spazbot]

maybe not.........hilux diffs can run up to 32.8(i think)legally so im thinking if i do that and get the tyre placard changed it should be cool.......

if it works

31s are illegel on a spook anyway so i guess ill just get busted either way...

i didnt think you could get hilux diffs under a zook , passed in qld at all

[mud4b]

as far as i know you can....

[mud4b]

thats getting worse greg.......

[greg]

thats getting worse greg.......

yes mate, 4.5 is less than 4.88 - this means the number will get smaller

[mud4b]

that bit i understand.
i know you can get 5.somethings but i heard they are weak......but it is going under a spook....

[redzook]

with 5.29 u will rev your tits off

go with the 4.5

[spazbot]

mmm 5.29 hilux diff you move pretty damn slow, i got them in my lux and im really pushing it to get to 110km/h and it makes lots of revs when it gets there

[mud4b]

so im thinking with the 4.5s i should be doing less revs on the highway but my crawl ratio will go down....

[redzook]

mmm 5.29 hilux diff you move pretty damn slow, i got them in my lux and im really pushing it to get to 110km/h and it makes lots of revs when it gets there

i think he will be a LOT lower then you on the road

[greg]

Just get an engine that doesn't mind reving harder