The 914 specific DTM

This forum is for any discussion related to Aircooled Technology, the DTM shroud and Massive TypeIV engines. You may read and search this forum, but you can not post to it.

Moderator: Daniel G

Locked
MASSIVE TYPE IV
Posts: 20132
Joined: Fri Jul 07, 2000 2:01 am

The 914 specific DTM

Post by MASSIVE TYPE IV » Tue Feb 15, 2005 6:16 pm

I finally got the install finished, here are some fitting and install pics!

http://www.aircooledtechnology.com/more ... index.html

The engine has lost 25 pounds over the stock cooling tin arrangement with this set up!

This one is arranged for a full race application with a full external oil cooling system. The next version will have a provision for the stock oil cooler positioned differently in the engine bay with some cool ideas put to use!

So whaddya think?

User avatar
speedy57tub
Posts: 1259
Joined: Sat Aug 11, 2001 2:01 am

Post by speedy57tub » Tue Feb 15, 2005 7:14 pm

:shock: Jake, real nice job! Maybe the same setup can be used for other applications (kitcars, 912's, etc...) :P

Now lets get some dyno and temp figures, I am definitely curious!! :wink:

MASSIVE TYPE IV
Posts: 20132
Joined: Fri Jul 07, 2000 2:01 am

Post by MASSIVE TYPE IV » Tue Feb 15, 2005 7:24 pm

Already did that- Last week...

Nice and even, no more than 15 degrees across the engine on the first try!

farmer
Posts: 2391
Joined: Fri Dec 07, 2001 3:01 am

Post by farmer » Tue Feb 15, 2005 7:59 pm

I like that air velocity "stack" at the intake. any idea as to how much that increased cooling, and where ? - I take it that it was mainly in the upper rpms there is a dreal difference.
T.

MASSIVE TYPE IV
Posts: 20132
Joined: Fri Jul 07, 2000 2:01 am

Post by MASSIVE TYPE IV » Tue Feb 15, 2005 8:59 pm

It made hardly any differenvce in cooling..
I used it on this shroud to quieten the fan because in a 914 the engine is 2 feet behind your head and the whirring sound can be a pain...

Mr.Spunone

Venturi

Post by Mr.Spunone » Wed Feb 16, 2005 8:52 am

Kind of a bummer it's no help with the cooling Owell back to the drawing board at least it looks cool LOL

User avatar
speedy57tub
Posts: 1259
Joined: Sat Aug 11, 2001 2:01 am

Post by speedy57tub » Wed Feb 16, 2005 9:54 am

MASSIVE TYPE IV wrote:It made hardly any differenvce in cooling..
I used it on this shroud to quieten the fan because in a 914 the engine is 2 feet behind your head and the whirring sound can be a pain...
Jake,
That is exactly what I thought that ring would do for you by enabling air to transition and more smoothly enter the shroud resulting in less airflow induced noise generation:D. It is impossible to eliminate all air due to the "whirring" internal shroud and fan vanage but hey, that is the sound we love from these engines! :D How did it work out with the noise?

By the way, remember that oil cooler I remotely mounted fed with the air from my own 911 shroud, I had to use an additional oil cooler. You should not have to if you should route air to one as I did since the radial fan's discharged air possesses opposite characteristics to that of the axial fan. My mixed results and the DTM design proves this. By the way, according to my cylinder head temp gauge, I was able to get about 15 degrees difference between my highest and lowest temp. It took a lot of experimenting with internal vanvage and lotsa headaches. I think it is probably more since my temperature analysis wasn't that controlled and optimal like yours but at least I can use this Type 1 setup until I make the move to the Type 4. :P

I kind of like this 914 DTM setup for my 912 :wink:

Locked