Re: [T3] REMOTE OIL COOLER EXPERIENCE

["Jim Adney" <jadney@vwtype3.org>]

Really interesting post with a LOT of good information.
I have snipped most of it for the sake of the archive.

On 13 Sep 2000, at 10:59, Martinez, Leon wrote:

> Initially I was having problems with my number 3 cylinder overheating;

> For my EFI with "accelerator pump option" :
> --Took off all of my injectors, plugged three fuel outlets, placed a
> hose in the remaining outlet, put one injector in the hose, connected
> an injector wire (two only work at a given time one on each side) ,
> placed injector tip in a measured test tube, turned ignition on ,
> checked for leaky injector, pumped accelerator 20 times (2 per second)
> for each injector and found this:
> 
> #1 1200 ML (milliliters)
> #2 300 ML       high speed pumping choked these last three (no spray)
> #3 500 ML 
> #4 700 ML

How different did these LOOK when you sprayed them? I'd just like 
to know how useful a visual inspection of the spray pattern is.

Seems to me that you really didn't need to go much further. You 
had found your REAL problem here. Of course I understand that at 
this point you couldn't be sure of this, so I suppose this explains 
the rest of your story. Can't say that I blame you, but it's not clear 
how important the rest of your efforts were.

> I had to buy new injectors, finding's: 

> - Bosch flows 1200 all even 

> - Bret rebuilds seemed as good as Bosch

> - Python rebuild do not buy, I had to exchange 8 before getting one
> good one, they varied wildly from only 100 ML to a max of 900 ML
> and half would choke at high speed injection.

> The last brand will definitely burn your engine

More useful information. I have never heard of Bret.

Of all the rest of the changes you made, I think the full flow filter, 
the counterweighted crank, and the late cool tin were the ones that 
really made a measurable difference.

> My compression test cold (with my dads Snap on and my Craftsman) is
> 75 lbs. and hot 95 lbs., flat all the way across . 

Very interesting that this works this nicely. I agree that there is no 
reason to change it. Did you just shim up the cylinders or machine 
the heads, or what?

Thanks!

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054

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