Diesel mixture/overheating

Submitted: Wednesday, Aug 06, 2014 at 19:48
ThreadID: 109046 Views:2966 Replies:12 FollowUps:3
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Hello all,

I'm in Kazakhstan at the moment on an overland journey from London to Cape Town with a NSW registered troopy

We did a big hill climb the other day and seem to have problems with the engine getting hot.
We're a bit concerned because tomorrow we leave Kazakhstan for Kyrgyzstan to do the Pamir hwy, second highest road in the world with a 4655m pass.

We fooled around by removing the spotties and inter cooler.
We are driving a '94 1hZ troopy with dts turbo running 8psi. We're told by the bloke who rebuilt the engine that the top mount we have fitted will cause the combustion temp to increase because the cooler more dense air will burn hotter.
After removing the cooler and doing the spotties we noticed a slight improvement but still gets hot.

It's probably worth mentioning that our troopy has an auto out of an 80 series LC because I'm parra and can't drive manual. We have two transmission coolers fitted in front of the radiator. It is now AWD.
We also carry a fair bit of weight.

We have noticed on the long and gradual hill climbs the EGT hovers around 500-520.
If it remains on this temp for too long the engine starts to get hot.

I'm thinking of removing some diesel from the mixture to help cool the EGT down.

Does any one have any tips or advise. I know what I need to adjust, just unsure of how many turns and how sensitive it is.
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