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Intercoolers - pro's & con's

Submitted: Sunday, May 02, 2004 at 08:33

Seto

I am considering fitting an intercooler on my LC100 4.2 diesel to which has been fitted with an aftermarket Garrett turbo by TurboGlide.
The problem is I am getting conflicting stories about fitting an intercooler, including from diesel service places.
What I would really like to know is the advantages/disadvantages to doing this in relationship to power, economy, reliability, engine temperature etc.
Also who would you recommend to do the work.

David
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ThreadID: 12540 Replies: 4
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AnswerID: 56918   Submitted: Sunday, May 02, 2004 at 14:34

Nudenut replied:

If i am not mistaken a cooler inlet air mixture should make the engine more efficient and hence more power etc etc.
I am missing something as to why you are being told not to?
Unless of course it relates to cost V gains

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AnswerID: 56932   Submitted: Sunday, May 02, 2004 at 15:38

Truckster (Vic) replied:

Are you talking a front mount, or above the engine?

For power intercooler will always be good on the highway, but when the going gets slow, they suffer from heat soak. All the engine heat heats the Icooler, and the air inside them. So at speed, the air flow will keep it cooler, but intercooler infront of radiator, will also heat the radiator.

Front mounts suffer from stone damage, and stucks, and cars sliding into the bank

Top mount suffer from heat soak.

www.are.com.au for excellent info on intercoolers.

YMMV
Reply 2 of 4
AnswerID: 56973   Submitted: Sunday, May 02, 2004 at 23:53

Seto replied:

I was considering a front mount. Some service centres say it increases the engine temperatures and causes the vehicle to use more fuel yet others say the opposite. Makes it terribly hard to know what is the best thing to do.

David.
Reply 3 of 4
FollowupID: 318754   Submitted: Monday, May 03, 2004 at 10:23

Truckster (Vic) posted:

They are correct in stating that.

If the intercooler is infront of the radiator, the heated air flow from the intercooler will then go straight through the radiator on the way through, which *CAN* cause the water to be warmer, thus hotter engine temps. Again slower you go the more heat, as intercoolers need air flow to keep them efficent.

Intercoolers are all a compramise.. There is no 'perfect' intercooler. They both have positive and negative's.

Wheres awill4x4, he makes IC's..
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FollowupID: 318769   Submitted: Monday, May 03, 2004 at 12:40

Patrol22 (Queanbeyan posted:

Saw a LC100 the other day with a thermo fan fitted to help out on the slow running stuff - similar fit to the 2.8tdi Patrol it has a fan under the intercooler to counter the build up of heat from the engine in the slow tough going at higher revs and lower gears.
FollowUp 2 of 2
AnswerID: 56980   Submitted: Monday, May 03, 2004 at 08:41

jamcage replied:

Seto

The intercooler will make for lower engine temp therefore increse the engine life.

Talk to Cooma Diesel on 02 62800178. They are the experts to talk to re Toyota, diesel and turbo charging.

Another point when considering front or top mount intercooler is that Toyota uses front mount on all their factory intercooled turbos.

Jason
Reply 4 of 4
FollowupID: 318755   Submitted: Monday, May 03, 2004 at 10:40

Member - Captain (WA) posted:

Sorry jamcage, but check out the Prado turbo diesel, it has a top mounted intercooler with a neat air feed from a double skinned bonnet feeding air from the leading edge of the bonnet.

Cheers

Captain
My 200 GXL TTD + Camprite
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