Intercoolers - pro's & con's

Submitted: Sunday, May 02, 2004 at 08:33
ThreadID: 12540 Views:2205 Replies:4 FollowUps:3
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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.

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Reply By: Nudenut - Sunday, May 02, 2004 at 14:34

Sunday, May 02, 2004 at 14:34
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
AnswerID: 56918

Reply By: Truckster (Vic) - Sunday, May 02, 2004 at 15:38

Sunday, May 02, 2004 at 15:38
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. for excellent info on intercoolers.

AnswerID: 56932

Reply By: Seto - Sunday, May 02, 2004 at 23:53

Sunday, May 02, 2004 at 23:53
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.

AnswerID: 56973

Follow Up By: Truckster (Vic) - Monday, May 03, 2004 at 10:23

Monday, May 03, 2004 at 10:23
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..
FollowupID: 318754

Follow Up By: Patrol22 (Queanbeyan - Monday, May 03, 2004 at 12:40

Monday, May 03, 2004 at 12:40
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.
FollowupID: 318769

Reply By: jamcage - Monday, May 03, 2004 at 08:41

Monday, May 03, 2004 at 08:41

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.

AnswerID: 56980

Follow Up By: Member - Captain (WA) - Monday, May 03, 2004 at 10:40

Monday, May 03, 2004 at 10:40
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.


FollowupID: 318755

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