Bypassing the intercooler

graham2230 · 8th March 2010, 13:00

Hi there,

Can anyone tell me what effect bypassing the intercooler on a Rover 75 Diesel would be?

Thanks in advance

Graham

GERFIX · 8th March 2010, 13:21

Quote:

Originally Posted by graham2230

Hi there,

Can anyone tell me what effect bypassing the intercooler on a Rover 75 Diesel would be?

Thanks in advance

Graham

Less power!

graham2230 · 8th March 2010, 13:27

Massive lost or slight loss?

I realise it will be down on power but any idea?

T-Cut · 8th March 2010, 14:22

Quote:

Originally Posted by graham2230

Massive lost or slight loss?
I realise it will be down on power but any idea?

It's guessing time folks.
I'll guess you can expect a 20% power loss.
But how will you measure it? Guess I suppose.

TC

Cymrudragon · 8th March 2010, 15:02

I think knowing what the intercooler does first will help ???
But basicaly it is way of cooling the gasses and compansating for the heating caused by the byproduct of the turbo. so leave it off will have a dramatic effect on the performance and over heat the turbo .....thus causing the turbo/supercharger to go BANG...... is the simple answer ps the loss of compresion will happen so bare in mind of the disadvantages of not having the inter fitted, air to air and air to liquid have no way of cooling .

T-Cut · 8th March 2010, 18:24

Quote:

Originally Posted by Cymrudragon

I think knowing what the intercooler does first will help ???

This will:
Wikipedia
An intercooler or charge air cooler, is an air-to-air or air-to-liquid heat exchange device used on turbocharged and supercharged (forced induction) internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through nearly isobaric (constant pressure) cooling. A decrease in air intake temperature provides a more dense intake charge to the engine and allows more air and fuel to be combusted per engine cycle, increasing the output of the engine.

TC

Telferstr · 8th March 2010, 18:58

So why would you want to do this????
The engine is designed to operate with this equipment fitted, so it does not make any sense to by-pass it.
Or am I missing something.

Regards,
Telfer.

geofftl1000r · 8th March 2010, 19:00

Quote:

Originally Posted by Cymrudragon

I think knowing what the intercooler does first will help ???
But basicaly it is way of cooling the gasses and compansating for the heating caused by the byproduct of the turbo. so leave it off will have a dramatic effect on the performance and over heat the turbo .....thus causing the turbo/supercharger to go BANG...... is the simple answer ps the loss of compresion will happen so bare in mind of the disadvantages of not having the inter fitted, air to air and air to liquid have no way of cooling .

Not sure that it will have any affect on the turbo at all. The air is cooled after it has been compressed by the turbo not before.
Another thing to think about is heat getting into the engine, we had big trouble on bikes running 30psi and no intercooler. Lose power very quickly as the whole engine just burns up with air entering the engine VERY hot!!!

geofftl1000r · 8th March 2010, 19:03

Quote:

Originally Posted by Telferstr

So why would you want to do this????
The engine is designed to operate with this equipment fitted, so it does not make any sense to by-pass it.
Or am I missing something.

Regards,
Telfer.

Maybe he want to make room for a water injection kit.....

OR...... NOS

Definitely not good to remove the intercooler and not replace it with some other means of cooling things down!

graham2230 · 8th March 2010, 19:06

Quote:

Originally Posted by Telferstr

So why would you want to do this????
The engine is designed to operate with this equipment fitted, so it does not make any sense to by-pass it.
Or am I missing something.

Regards,
Telfer.

Can't get a replacement intercooler at a reasonable price right now. Hence the reason for temp repair.

I can't see it having any effect on the turbo as the air is hot after going through it and is cooled before entering the engine. I see the problem about the extra heat in the engine though, maybe as you were running 30 psi boost that caused a problem.

Maybe someone can tell me where to get an intercooler at a reasonable price?

8th March 2010, 13:00	#1
graham2230 Regular poster Rover 75 Saloon Join Date: Feb 2010 Location: Leeds Posts: 91 Thanks: 0 Thanked 0 Times in 0 Posts	Bypassing the intercooler Hi there, Can anyone tell me what effect bypassing the intercooler on a Rover 75 Diesel would be? Thanks in advance Graham

8th March 2010, 13:27	#3
graham2230 Regular poster Rover 75 Saloon Join Date: Feb 2010 Location: Leeds Posts: 91 Thanks: 0 Thanked 0 Times in 0 Posts	Massive lost or slight loss? I realise it will be down on power but any idea?

8th March 2010, 15:02	#5
Cymrudragon I really should get out more....... MGZTT2.5 V6 190+ SE 2002 Join Date: Oct 2009 Location: Gilfach-goch Posts: 2,201 Thanks: 0 Thanked 8 Times in 4 Posts	I think knowing what the intercooler does first will help ??? But basicaly it is way of cooling the gasses and compansating for the heating caused by the byproduct of the turbo. so leave it off will have a dramatic effect on the performance and over heat the turbo .....thus causing the turbo/supercharger to go BANG...... is the simple answer ps the loss of compresion will happen so bare in mind of the disadvantages of not having the inter fitted, air to air and air to liquid have no way of cooling .

8th March 2010, 18:58	#7
Telferstr Posted a thing or two Mitsubishi Eclipse Cross 3. 1.5 Petrol 6 Speed Manual Gearbox. Great fan of the Mk1 75 which I had 3 Join Date: Feb 2007 Location: Inverkip, Scotland. Posts: 1,223 Thanks: 23 Thanked 68 Times in 44 Posts	So why would you want to do this???? The engine is designed to operate with this equipment fitted, so it does not make any sense to by-pass it. Or am I missing something. Regards, Telfer.