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> The pics you have been waiting for!!, Introducing the 914 DTM V1.0
Jake Raby
post Feb 2 2005, 09:01 PM
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Here it is guys!

Its not pretty sitting there all naked and bare without it's Gelcoat on, BUT at this point it just has to function and be proven. It still didn't turn out too bad considering it wasn't made in a mold!

http://www.aircooledtechnology.com/r_d_914_dtm.htm

Nevermind those pics of engine parts- Charles goofed up when he loaded them in a jiffy for me today. (those are a newly designed piston for a wild chamber Len and I designed and a 66x100 bore size)

We finished the mock up over the weekend and its ready for the dyno next week!

This shroud is the first one and it is set up for guys with full external oil systems, full flow and accusumps- like my car. After I make this version work it will shed some light on what I need to modify to physically go further with to fit into the 914 and still utilize the factory oil cooler. I have two possibilities of that at the present.

The other design locates a small efficient cooler normally used externally in the sheetmetal just forward of the engine toward the cockpit of the 914. This version will blow air into a duct we are making now, through the sheetmetal and out the bottom where another duct will be that has a venturi effect to help pull air through the cooler even faster as speed increases!

Its amazing that I have gotten this far with it with everything else going on here!!!!!!!!

For those that are not on my list but would like to be email the Mad Scientist at productdevelopment@aircooledtechnology.com
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Aaron Cox
post Feb 2 2005, 09:03 PM
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oh dude... that looks hot! (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)

whats the expected cost? when does the one that supports stock + external oil coolers come out?????

(IMG:http://www.914world.com/bbs2/html/emoticons/drooley.gif)
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Allan
post Feb 2 2005, 09:04 PM
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SWEET!!!! Doe it do away with all of the other tin?
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Aaron Cox
post Feb 2 2005, 09:05 PM
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oh...the modified crossbar set up to clear the alternator (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) , and those are TINY velocity stacks!!!
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URY914
post Feb 2 2005, 09:07 PM
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I like the no spark wire look. Where's the dizzy?
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redshift
post Feb 2 2005, 09:13 PM
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oh god i want that it looks cool and man i want that i want it

HOLY CRAP! BLOWER TIME!!


m
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dlo914
post Feb 2 2005, 09:36 PM
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Whatchu' lookin' at?!?!
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that is one sleek look... (IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/boldblue.gif)
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r_towle
post Feb 2 2005, 09:58 PM
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those are cut little velocity stacks!

Cool work.

Rich
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dinomium
post Feb 2 2005, 10:13 PM
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Git on a chair son, all the good stuff is goin over yer head!
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That is very kewl indeed! Shane is already thinking of how to ask for a horizontal mounted fan version!
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BigD9146gt
post Feb 2 2005, 10:25 PM
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Very kool!!!!

Jake, what kind of performance differences do you see with different lenght velosity stacks? In which occations do you want to use what lenght?
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Jake Raby
post Feb 2 2005, 10:59 PM
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All that velocity stack info is highly proprietary! I posted some tests a few weeks back but after my last round of tests and the results I won't be doing that anymore!

The power gains with certain stacks with certain manifolds on certain combos with certain exhaust systems is AMAZING! When I see people running huge stacks on a TIV now it just makes me laugh!

To answer that question directly... "The short stacks and short manifolds compliment the engine combination when coupled with the Tangerine Racing Header"

BUT I'll be testing the hell out of this combo with various stacks and manifolds for sure because this is MY engine for MY 914! I'm not afraid to wear it out on the dyno...

As for a Horizontal fan system- It is worthless- This set up has beat the shit out of everything I have tested and ran in every application- Period. MORE AIR DOESN"T MEAN SHIT! You must direct that air to the pertinent parts of the engine that run hottest, the DTM does that with no sweat.

Notice that Velocity stack on the rear of the shroud?? Tht is the artwork of spunone- a member here. I had him make it to try and muffle the whirr of the cooling fan which can be pretty loud in a beetle, yet alone a 914 where the engine is right behind your head. I am going to test it with and without the stack to see if it impacts cooling and sound.

As for cost, this version will be about 785.00 +/- for the shroud and air sealing tin to seal it up like factory..

Yes, the DTM does away with ALL factory tin and you can drill it for 1.7/8 or 2.0 spark plugs!
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nebreitling
post Feb 2 2005, 11:01 PM
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$800 -- that's not a bad deal, too (IMG:http://www.914world.com/bbs2/html/emoticons/clap.gif)
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Aaron Cox
post Feb 2 2005, 11:10 PM
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QUOTE (nebreitling @ Feb 2 2005, 10:01 PM)
$800 -- that's not a bad deal, too (IMG:http://www.914world.com/bbs2/html/emoticons/clap.gif)

do you take installments (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
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Jake Raby
post Feb 2 2005, 11:12 PM
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Nah... I don't have time to keep up with the books on that.....
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Brett W
post Feb 2 2005, 11:24 PM
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Looks like I could almost fit a good bell crank linkage behind the fan shroud.

What was the problem with the Beetle version in the 914?

Jake, did Mark put a cage in your car?
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fiid
post Feb 2 2005, 11:33 PM
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Nice setup dude. Looks great.

(IMG:http://www.914world.com/bbs2/html/emoticons/smilie_pokal.gif)
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Jake Raby
post Feb 2 2005, 11:39 PM
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I did set up a bell crank linkage behind the shroud BUT it was impossible to attach a throttle cable in any sane manner and make it function. Also in a full bodied car the partition between the trunk and the engine bay would make it a bitch to work on with little space. I am working on two more linkage possibilities as we speak but can't do it till I get it in the car.

as for the TI version and why I didn't use it:
The engine bay lid would not close with the standard TI version and the oil cooler housing interferes with the body terriably. Mark runs one because that whole section of his car is moved aft allowing it all to clear the body. Mark's head temps dropped 75 degrees from the 911 shroud as soon as he installed the DTM. In his app I only drive the fan @ 1.24:1 instead of 1.58:1... I would imagine that at 1.58:1 he'd drop another 25 degrees.

The added power he made seemed to help him pick up a solid second at roebling!


Mark didn't install a cage in my 914, I'm going to get one from Chris Foley.
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Brett W
post Feb 2 2005, 11:47 PM
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You need to get your cage in by April 16-17 and do the Solo 1 School at Little Talledega. Then you will have your solo 1 license and you can come over and run the Crow Mountain Hill Climb in Oct. Be nice to have another 914, at least on of us will have a VW motor.
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Jake Raby
post Feb 3 2005, 12:23 AM
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Brett, with all this stuff going on there is NO WAY I can get away for that long...

Wish I could!
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seanery
post Feb 3 2005, 12:26 AM
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that thing looks great Jake!
I think I saw a bit of it in the raw footage for your video?
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