Vehicle & Technical > Defender

200 or 300 tdi which is better

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iomlr:

--- Quote from: dreadnought110 on September 25, 2007, 22:10:19 ---300 tdi allday long  regarding cooling issue's not now!!! 8)  8)

--- End quote ---

Sorry to bring this old post up but what are the cooling issues with the 300tdi and what are the fixes for this? I'm installing a 300tdi and i really dont want to have problems with cooling issues.

many thanks

mroxo:
Ive got a 300 in my 1990 90 fitted onto an lt77 box and have not bothered with the lower 6 bolts and have had no issues. The cooling problem is all to do with the water pump being higher up on the 300 engine and the 'P' gasket that is behind the water pump housing on the block. If the later type gasket is fitted(metal) instead of the older paper type then there is no issue with it. The problem lies with the amount of coolant that is above the water pump. 1 small leak and the pump soon becomes just a paddle.If you can get hold of a header tank from a range rover with the coolant low level switch and fit it to your truck with a warning light etc you should be able to avoid any overheats. If you are fitting to an early TD or NA defender then change the header tank to a plastic type as the steel one is smaller and the caps usually open and loose coolant as there is more pressure in the system. Since doing mine I have been very impressed and it drives lovely.

iomlr:
or change the gasket for the metal type?

Rasbo:
i've just finished putting an 300 onto an lt77, first conversion ive really done and if you can drill a few holes (Not a necessity but i felt more comfortable doing this than removing 6 studs) and a little bit of welding go for a 300. i'm really pleased with the  delivery of torque, is very smooth got a load of pics in my gallery

http://dfytr.homedns.org/gallery2/main.php?g2_itemId=39182&g2_page=1

my neighbors got a very nice 200 conversion, but but after coming on the test drive with me he now wants a 300.

only other thing i might do is put a disco transfer box on, but wont decide till i get it on the motorway. Would have liked to get an R380 if i could have afforded it, but i kno people whom have been running v8s on lt77s with no probs for years.

Andy

iomlr:
aparently so i have been told by a few ppl now  a 200 tdi bell housing on the lt77 and a new spiget (sp) bush and jobs a good un!

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