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Author Topic: CJAA Conversion?  (Read 4018 times)

May 14, 2021, 04:28:29 pm

Bad Actual

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CJAA Conversion?
« on: May 14, 2021, 04:28:29 pm »
I've got a couple Jetta's that I'd like to pull the CR TDI's from, convert them to mTDI's with all mechanical control for the turbos. Has anyone done this yet?



Reply #1May 15, 2021, 01:13:27 am

libbydiesel

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Re: CJAA Conversion?
« Reply #1 on: May 15, 2021, 01:13:27 am »
I do not think that anyone has done an mTDI CR yet.  I've considered it.  It would require a fair amount of custom work but I believe would actually be doable.  The way I would do it is use the ALH accessory bracket, use a custom intake manifold, and make whatever adapters were necessary to fit fully mechanical injectors. 

Reply #2May 18, 2021, 02:55:45 pm

Bad Actual

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Re: CJAA Conversion?
« Reply #2 on: May 18, 2021, 02:55:45 pm »
I have two of these, one running, one is not (pulled from a wreck). I don't have a problem pulliing together the parts to test out fitments, etc. Let me get the ugly one on a stand first and start getting some meaningfull measurements, pics, videos put together.

- Would not one of the pumps for a 1.9 work, with some larger injectors?

- Can I control how rich/lean the mixture runs via cable/lever? (Like aviation mixtures) I hit lots of mountains (Is it even necessary?)


Reply #3May 18, 2021, 04:51:00 pm

libbydiesel

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Re: CJAA Conversion?
« Reply #3 on: May 18, 2021, 04:51:00 pm »
If the ALH bracket will bolt up (and it looks like it will) then getting a pump that would work well is quite easy.  The AAZ pumps would not be a good choice.  There are others that would be much better, e.g. Land Rover 300TDI, LT28, Cummins 4BTA, etc...  Injectors that fit and work is a much larger hurdle. 

Reply #4May 18, 2021, 04:52:07 pm

libbydiesel

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Re: CJAA Conversion?
« Reply #4 on: May 18, 2021, 04:52:07 pm »
...and the injection pump IS the mixture control.  Thinking of it as rich/lean on a diesel is not really helpful, though, IMO. 

Reply #5January 17, 2022, 04:29:10 pm

Chuck1978

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Re: CJAA Conversion?
« Reply #5 on: January 17, 2022, 04:29:10 pm »
https://youtu.be/DeZXeo-qnzA

DONE!

H Pump.

"Jhon Doe"
He's in Europe somewhere.

Reply #6January 17, 2022, 09:28:40 pm

ORCoaster

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Re: CJAA Conversion?
« Reply #6 on: January 17, 2022, 09:28:40 pm »
Flames out the exhaust ports!!!!   You will need to watch the EGT gauge for sure.