can some one please give me a web address where I can find these inserts please

folks I need to purchase a oil and transmission cooler that fits under the front of a 1999 4.3 lt v6 blazier its right hand drive
mine has a leak in it it only a pin point leak but its leaking from the transmission side in to the water

I live in Australia so would need one priced with shipping

 

can someone direct me to an O ring kit for this please as I said I'm in Australia and wouldn't know where to start looking in America

 

I'm sure someone will chime soon, theres a few RHD owners on here. Sorry I have no idea where to look myself.

 

I have a 1999 LT 4dr, 4wd, and I do not recognize that remote oil-filer mount and heat exchanger. On our LHD Blazers, the oil is cooled by an in-tank heat exchanger that is part of our radiators.

Have you looked at RockAuto.com?

If you cannot find the parts, you might have to create your own new oil cooler system using a new dedicated air-cooled radiator mounted in front of your engine radiator.

 

if I go to separate coolers for the engine and transmission oils what sort of pressures do I have to allow for engine oil I guess can be up to 120 psi what is the transmission one have to cope with. and is there an off the shelf kit for the blazer ruther than all these genetic ones I see

ie what fins do you need as most American ones are made for very low temps where as here in Rubyvale in Queensland is more like your death valley where you have say 4 frosts a year down to around -5 then in summer we get mid 110's for a few weeks on end to such an extent the dash moulding just falls apart and cracks and breaks up

 

I recently did some research into remote oil coolers before I went with installing an in-take cooler in my aftermarket radiator.

I found that if you dig a bit, you can find some very nice oil cooler parts rated for some high pressures and with lots of cooling capacity. I also found that you can get thermostatically controlled bypass valves that would prevent the oil from going through the extra cooler until the engine oil had warmed up a bit. I was considering the bypass valve as where I live our coldest temps are about 0F and our highest are 110F. For you, it sounds like a by-pass valve is unnecessary.

But back to sources of coolers for you; I would look at businesses that supply parts to race cars, professional and amateur.

Regarding pressures, my oil pressure gauge goes up to 80 psi with the max pressure maybe 60 ever observed. So I would think a system rated for 120 psi would be fine.

One of the brands I was looking at was Earl's. And just by chance when looking for the old link for those coolers, I found one for them out of Australia. I'd start there.
https://www.earls.com.au/product-cat...ssion-coolers/

You might also look into installing a dedicated fan for any external oil cooler you install.

Do you have an over-sized radiator? That is what I installed because I also tow my boat (1,000 kg) up a hill that gains over 500 m in 10 km. On a 40C day, I'm really taxing my cooling system.

Hope this helps and be sure to post your repairs.

Here is a link to my thread on my upgraded radiator installation: https://blazerforum.com/forum/2nd-ge...adiator-99841/

 

Replacing the heat exchanger with aftermarket oil and transmission coolers may be the easiest option if you cannot fix the heat exchanger.
With my LS swapped S10 I run a trans cooler like this one
https://www.jegs.com/i/JEGS/555/60372/10002/-1
I just attached it to my A/C condenser with the provided clips. In Texas 100+ heat my trans stays around 170-180 max.
You could just have one for the trans and one for the oil.
I was told by my transmission builder to bypass the in radiator cooler and just run a stand alone cooler because with the engine coolant temperature at around 190-210 the in rad cooler will actually heat the transmission fluid up rather than cool it down. This is good for colder climates but bad for hot areas.

 

thank you for that

I'm looking at what you have done
and Ill use your stuff
as I said my problem now Ive decided to get rid of whats there
is to know what the best parts and bits and pieces suit the chevy as there is alsorts out there.

you see oil kits with hoses etc and oil filter holders then go and see them and they look like rubbish so by seeing what some one else has done is good
thank you

 

thank you for that

 

You are very welcome.

And to be clear, I think those products at the Earl's website are a cut-above those little extra-cooling-kits you find off the shelf. The coolers at Earls that use the AN-fittings are what people install in rally and race cars. They can do a very good job.

The reason I went with the new radiator option was that to install a dedicated oil cooler with the thermostatically controlled bypass valve would have been too expensive. Without the bypass valve and the extra fittings to go with it, that option would have been more competitive in price although it would have required more customization.

The obvious advantage of the new radiator of course is that that there is potentially increased cooling capacity for both the engine oil AND engine coolant.

Could you get a custom radiator with an in-tank oil cooler made for you? That was another option I considered. Here at least those prices were higher too than what I currently did. It is worth shopping around as I the radiator I used had to be customize but there were ones that had less cooling capacity that did have the oil cooler already installed.

Good Luck and keep us posted.

P.S. I have no clue about the relative difficulty of adapting what I did to a RHD Blazer.