Outer Limits 4x4 Board

hi all, i recently bought an 89 hilux with a commo v6 conversion and 4sp auto.
I was wondering what options are out there for this combo in relation to engine braking, i have taken the fourby out and it really wants to get up and go when u are trying to climb down hills slowly.
What can be done to slow down without having to ride the brake pedal
nibbsy

Not baging you but Do you just go down the hill in Drive or do you put it in first

whats wrong with your brakes? they are discs right? or is it drums all round?

nibbsy wrote:hi all, i recently bought an 89 hilux with a commo v6 conversion and 4sp auto.
I was wondering what options are out there for this combo in relation to engine braking, i have taken the fourby out and it really wants to get up and go when u are trying to climb down hills slowly.
What can be done to slow down without having to ride the brake pedal
nibbsy

Whautos do not have good compression braking
If you have a gear drive transfer case you can fit either or both lower gears in the transfer case or fit dual transfer cases
If you have a chain drive transfer case pray hard

An 89 would be solid axle and gear driven wouldn't it?

I know there was a few variations but I think the earlier ones were alot simpler

Yeah 89 will be gear driven either solid or vented front rotors. if locked up in first they shouldn't be too bad if in drive it just pick up more and more speed unless the bake is used

high n mighty wrote:An 89 would be solid axle and gear driven wouldn't it?

I know there was a few variations but I think the earlier ones were alot simpler

Could also be a SR5 extra cab with IFS and chain drive transfer
and there are a lot of people that refer to a 4 runner [also IFS] as a Hilux

its a solid axle cab chassis, gear driven case with marks adapter to mate to the TH700
I cant actually get it into first when in low range cos the transfer case shifter fouls on the auto selector,
i will bend up the shifter eventually and see how it goes in first gear.
brakes are front disc and rear drum, its just hard to steer if ya wheels keep locking when they hit some loose stuff!!!
thanks for the replies people.
nibbsy

Yeah i'd focus on getting it so you can use first then maybe even a disc rear roctoy desing fab of here was going to do some more up maybe shoot him a pm

My GQ in 1st gear goes too slow, I usually need to accelerate down steep hills.

Any other gear, lightly riding the brakes does the trick. Being Discs, they don't fade or lock up.

You might have to click it into neutral and ride the brakes, unless you want to fork-out for lower transfer gears or even get the double transfer option for low-low.

v6hilux wrote:You might have to click it into neutral and ride the brakes, unless you want to fork-out for lower transfer gears or even get the double transfer option for low-low.

Hold up - Never decend steep hills in neutral, relying on the brakes. Being in neutral makes it easier to lock a wheel up, and gives you less control over the decent. Just like going down a steep hill with the clutch in driving a manual.

Fix the conversion so you can get first, then test it out. If its still to fast, lower the gearing.


Layto....

Get a full manual valve body with engine breaking from TCI if it's too much of an issue. http://www.tciauto.com/Products/GM/gm_4L60E.asp
Low gearset would be good too as others have suggested.

lay80n wrote:

v6hilux wrote:You might have to click it into neutral and ride the brakes, unless you want to fork-out for lower transfer gears or even get the double transfer option for low-low.

Hold up - Never decend steep hills in neutral, relying on the brakes. Being in neutral makes it easier to lock a wheel up, and gives you less control over the decent. Just like going down a steep hill with the clutch in driving a manual.

Fix the conversion so you can get first, then test it out. If its still to fast, lower the gearing.


Layto....

That's interesting! I assume you are saying "1 or 2 wheels might lock-up and the others will keep turning!"

It's possible and I forgot I have double diff locks and it won't happen to me with them switched on.

Layto is correct couyld be a problem with open diffs!

nibbsy,

I have a Surf V6 too with T700 auto. It has a problem staying in Low, as the shifter hits the console and I have to hold it in low, with a lot of effort. Check you haven't got the same issue too and don't realise. It also could be a linkage adjustment if you cant get low easy.

A v6 with an auto behind that is pulled back in low range st gear will have close to the same engine braking as a manual behind a v6 that is in low range 1st gear.

Yes the auto will slowly creep up in speed and will need the odd usage of brakes to bring it back under controll but it isn't as much as you'd think.

Most people that say autos have NO engine braking have either never driven an auto in the bush OR when they have have only put it in drive and forgotten they have a shifter next to them. Its there for a reason, USE IT.

As I mentioned earlier, my GQ is usually too slow in first low.
But with any modern car, using the brakes is not an issue, not like the olden days of Land rovers and Cruisers with drums all round.