Diesel intercooler query

[75driver]

No, I was looking at that, but I’ve ordered one from G&M radiators, for £138.


Edit, just noticed that the photos used in the link on the previous thread, are the same as those illustrated in G&M sales ad.🤔

There is a “How to” on the forum here using a G&M intercooler, courtesy of Jakg.
How-To - Fitting a G&M Aluminium Intercooler (CDTi)
https://r.tapatalk.com/shareLink?sha...6&share_type=t


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[marinabrian]

I would ask Big Russ his opinion on this type of intercooler


Brian

[marinabrian]

Sean, you need to read THIS and THIS

Brian

[trikey]

Originally Posted by JMW

Has anyone tried one of these?

https://www.ebay.co.uk/itm/MGZT-Rove...cAAOSwLwBaXIbk

Yep, I had a car fitted with one of these, nice & shiney and less power made than with an original intercooler

[T16]

So the intercooler is volumetrically bigger causing either a pressure drop and/or slower airflow?

[75driver]

Originally Posted by marinabrian

Sean, you need to read THIS and THIS



Brian

Oh dear. That reading doesn’t make for a promising outcome. Not that I was looking to increase power, but a reduced power is never good.😳
Anyhoo, unit is ordered and most likely dispatched.
In the interest of another test of these units, I’ll probably fit anyway, to see does it resolve the diesely exhaust fumes.
What’s the worst that can happen🤔.
At least I’ll have my old one out, to be cleaned and see if it can be mended in any way.


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[75driver]

Well, I fitted the gm intercooler on Saturday.🤭
It’s a heavy ol’ lump, made of more substantial stuff when compared to the original.😬

1st results driving: didn’t really notice a difference. Still plenty of oomph, and still no black smoke.
After a while: thought I had to rev slightly more for the same acceleration, ie very slightly less torquey.

TOAF results: (at idle and 3000rpm) when up to Temperature.
Pre change: 497 - 692 mg/s
Saturday after change: 490 - 570 mg/s
This eve 1: 500 - 630 mg/s
This eve 2: 490 - 580 mg/s

So, a bit of a mixed bag of results, but erring on the negative side of maf spec, previously advised as: 490-505 at idle to 620-680 at 3000 rpm, with no load.

Will probably take more readings when I can, just to compare.
Old intercooler is now power washed & holes have been “repaired” with araldite, should I wish to refit. I probably will, but not for several weeks.

Did it cure my smelly diesely exhaust fumes.....No.🙄🤬.
Ahh well, that’s another potential cause stroked off the list.
Next is to check if the power flow “sports cat” is just a dummy, like me.😳


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[75driver]

Just to finish the thread:
Took the marmite duotone to a local exhaust outfit that do “power flow” exhausts.
From visual inspection they confirmed that I had no leaks at the flanged joint photo’d at the start of the thread.
From knocking the side of the “sports cat”, with a small hammer, they also said it was hollow...ie no cat.
Got them to install a new one, and also alter the tailpipe that was only mm’s from the rear bumper, and prone to knocking every once in a while.

Result: fumes now gone 😅 (well, to the point where it is no longer embarrassing to drive in public places)😳

As with most jobs I carry out / get done, I usually create another problem.🙄
In “drive” with foot on the brake, and sometimes when in “park”, the exhaust is vibrating slightly on the rear rubber mount. Ho hum.😞.


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[75driver]

At the weekend I decided to refit the original, intercooler that had been repaired by plugging the holes with araldite. (Cause I have nothing better to do with my time&#128580.
The car now drives a lot better, more torquey and less revs required for the same output, than when fitted with the gm intercooler.

So, in summary...
- a gm intercooler is almost as good as an original intercooler that has holes in it.🙄
- a gm intercooler is not as good as an original intercooler.😬
- Big russ was correct.... intercooler on cdtl 2004
https://r.tapatalk.com/shareLink?sha...8&share_type=t

I haven’t had a chance to take any MAF readings. Don’t suppose I really need to.🤭
Driving the car says it all.



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[T16]

What about the all metal one Rimmers sells?

Is this the same company, or is it a better reflection of OE specification?
(not that it really matters for me personally, ive never had an issue with the plastic original one aside from doing the rings as standard procedure)