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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old February 10th, 2020, 09:42   #16
CNGVW
 
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Location: Bob Mann Auto, 111 High St, Pembroke MA 02359
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I run a 3-5 GPM 12 RV water pump with a radiator up front closed loop setup. We run 7 hr races when the car comes of the track you can grab the out let pipe with your hand.
Look in the grill you can see the small radiator you must burp the system in my car of all the air. We run windshield fluid in our system it a better heat exchange fluid
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Last edited by CNGVW; February 10th, 2020 at 09:44.
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Old February 11th, 2020, 07:56   #17
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Windshield fluid actually has slightly worse heat exchanging properties than plain water. But it won't freeze nearly as easily.
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Old February 11th, 2020, 08:31   #18
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Quote:
Originally Posted by turbobrick240 View Post
Windshield fluid actually has slightly worse heat exchanging properties than plain water. But it won't freeze nearly as easily.
Yeah I was thinking of using that over regular coolant. Know of any issues using it long term?

I ended up going with this pump. Hope it holds up. Kind of a budget setup http://www.frozenboost.com/liquid-ai...f5ad5cab427bd0

I also ordered this ac condenser. It has a 25.75" x 16" core with 5\8 and 3\8" inlet\outlets. Hoping it does a decent job.
https://www.amazon.ca/gp/aw/d/B000C7...b_b_prod_image
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Old February 11th, 2020, 08:53   #19
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Straight methanol is pretty aggressive against aluminum, but when it's mostly diluted with water in windshield fluid, I don't think it would be much of an issue. I'd rather use a dilute anti-freeze blend myself. 10/90 in the summer and up to 50/50 in the winter depending on climate.

Last edited by turbobrick240; February 11th, 2020 at 09:03.
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Old February 11th, 2020, 08:59   #20
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Quote:
Originally Posted by Runninwild View Post
Yeah I was thinking of using that over regular coolant. Know of any issues using it long term?
I ended up going with this pump. Hope it holds up. Kind of a budget setup http://www.frozenboost.com/liquid-ai...f5ad5cab427bd0
I also ordered this ac condenser. It has a 25.75" x 16" core with 5\8 and 3\8" inlet\outlets. Hoping it does a decent job.
https://www.amazon.ca/gp/aw/d/B000C7...b_b_prod_image
That is the pump I use.
The A/C condenser may be a bottleneck, though, because of the relatively small tubing
diameter.
I would opt for something with the same 3/4" inlet/outlet diameter as rest of the system.
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Old February 11th, 2020, 10:13   #21
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Quote:
Originally Posted by flee View Post
That is the pump I use.
The A/C condenser may be a bottleneck, though, because of the relatively small tubing
diameter.
I would opt for something with the same 3/4" inlet/outlet diameter as rest of the system.
The intercooler has 1\2" npt fittings so I don't think it's the end of the world. I'll rig the pump up and run a bucket of water through the condenser and measure how long it takes vs a straight hose and get an idea of how much it restricts it
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Old February 11th, 2020, 17:12   #22
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just run normal glycol coolant

that ac condenser will def be a bottleneck, keep in mind 1/2" NPT is 5/8" ID
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Old February 12th, 2020, 09:46   #23
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Quote:
Originally Posted by turbobrick240 View Post
Windshield fluid actually has slightly worse heat exchanging properties than plain water. But it won't freeze nearly as easily.
We can not run anti freeze on the track I was told use washer fluid of its ex rate ever bit helps If it leaks in to the engine may get a added HP!!
Remember the pump must push the fluid through both ratt and some cases up hill
on the beetle you will see the blue pump on the dash and the ratt on the roof
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VW and Audi Master Technician and TDI Specialist. Bob has over 35 years of experience in the field, and is listed on TDIclub.com as a trusted TDI Mechanic.
Bob is also known for his CNG conversions and is a consultant for Patrick Racing.

Last edited by CNGVW; February 12th, 2020 at 09:52.
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Old February 15th, 2020, 08:41   #24
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I'm kind of questioning that ac condenser now. anyone have any cheap options that work well? also what kind of gph or gpm should I be looking for? I ordered that 500gph pump and plan to pump like 10 gallons through the condenser to test how much it bottlenecks flow, just curious what kind of actual flow rate id be looking for?
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Old February 16th, 2020, 12:33   #25
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Quote:
Originally Posted by Runninwild View Post
I'm kind of questioning that ac condenser now. anyone have any cheap options that work well? also what kind of gph or gpm should I be looking for? I ordered that 500gph pump and plan to pump like 10 gallons through the condenser to test how much it bottlenecks flow, just curious what kind of actual flow rate id be looking for?
If you have enough room, a small car radiator from the J/Y would work great!
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Old February 16th, 2020, 14:10   #26
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see if the junkyard has any priuseseses
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Old February 22nd, 2020, 05:34   #27
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My intake Water air intercooler i use many year...

In winter, i don't run water pump most time, air intake at +20c to +30c over ambient temperature on highway.

When water pump run, intake are +6 to +8c only over the ambient.

I use big front mount intercooler to cold down water (water is engine coolant) and make in same time the water reservoir.

Water pump in first are big bosch pump (1/2" pipe) use on ford cobra, after some corrosion on electrical contact, i put very small china pump (1/4" pipe) for temporary swap, i discover the china pump make great job and i lost only +1c to +2c on steady state and little slower recovery time on peak temp.

This setup is on my old Jetta 2002, my i run jetta 2009 stock.

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Old February 22nd, 2020, 07:28   #28
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that intake is badass! unfortunately I can barely weld mild steel let alone aluminum lol. Think im just gonna order one of those cheapish 24x8 heat exchangers from ebay for $120. will fit nicely behind the grill In my truck
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Old February 23rd, 2020, 10:07   #29
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I remember when Luc put that in...I saw in it Montreal...it was the same thing I wanted to do on my car....but hadnt gotten around to it. His was nice...and tune was good too. He does everything himself too...right down to welding.
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Old February 23rd, 2020, 15:35   #30
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The most trouble with this intercooler is how air goes in intercooler fin.
In high boost and high velocity, most air rush to the end and the cylinder under intercooler input run too rich, the cylinder a other end run lean.
I make bend plates at input to put air more equaly on all intercooler surface.
Because the volume of air between head port and intercooler are not very big, velocity of air over intercooler need to be equale on all surface.
The top volume of intercooler need to be redesign.

Another trouble with this setup is intake halen bolt, is nightmare to screw and torq because tubulare manifold are big behind intake.

The good point is near zero turbo to intake tube, 1/2 or 3/4 water tube is very easy to route, winter control IAT and heat mass on highway ramp.


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Last edited by dieseleux; February 23rd, 2020 at 15:37.
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