tvr overheating problems

[craigh]

a friend of mine runs a 93 tvr griffith with im pretty sure is the 4.2,he has problems with very high running temps and near overheating i know he has a fan problem but he swears by everything a tvr dealer tells him ie a 70/30 split antifreeze to water,and a very thin oil ie mobil 1 0w 30,anyone out there running high bhp rover engines? any advice much appreciated

[russell_ram]

'a friend of mine runs a 93 tvr griffith ......problems with very high running temps and near overheating'

That'll be a standard TVR then, how they expect a car with a horizontal radiator and no grill to cool properly ! ! ! !

Guy two doors down from me had a Griff 500 - guaranteed to boil up at least once a week (he only ever used it once a week).



Russ

[russell_ram]

More sensibly,

70/30 anti-freeze is worse than at cooling than a more std 30 or 50% mix - in fact pure water is best. The anti freeze is only there to suprisingly enough, stop it freezing in the winter, as well as lubrication of the w/pump seals and as a corrosion inhibitor.

As for the oil, there is no way that I would put Mobil 1 0W40 in any V8, especially a Rover. Land Rover (it is their engine after all) specify 10W30 (for -10 to +30 deg C ambients) or 10W50 (-10 to +50). I doubt very much that TVR have done the extensive test bed and vehicle durability mileage required to justify their choice of oil, or maybe it's because they don't care about long term durability and they can charge more than £10 a liter for it when they do a service.

Russ

[maxGD059]

>'a friend of mine runs a 93 tvr griffith ......problems with
>very high running temps and near overheating'
>
>That'll be a standard TVR then, how they expect a car with a
>horizontal radiator and no grill to cool properly ! ! ! !
>
>Guy two doors down from me had a Griff 500 - guaranteed to
>boil up at least once a week (he only ever used it once a
>week).
>
>
>
>Russ

Is this why they put crazy low thermostats in them opening at 72'C then Russ?

Cheers

Richard
(Hillclimb convert)