Transaxle cooling, pics of cooling setup |
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Transaxle cooling, pics of cooling setup |
brumi |
Aug 13 2012, 07:30 AM
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#1
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Newbie Group: Members Posts: 10 Joined: 30-May 12 From: new york Member No.: 14,498 Region Association: North East States |
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brant |
Aug 13 2012, 09:07 AM
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#2
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914 Wizard Group: Members Posts: 11,618 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
nice job
can you add pictures of your cooler from below I would love to see your mounting bracket thanks brant |
Randal |
Aug 13 2012, 12:33 PM
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#3
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Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
Here are a couple of pics showing how I cool the transaxle on my vintage 914/6 race car Pump ( white ) is gear driven. filter ( red ) has temperature couple, fluidyne oil radiator is mounted between the megaphones When you put the V bar in the truck, tied to the shock towers, could you feel any difference in the handling? Nice job on the cooling system. |
pcar916 |
Aug 16 2012, 10:59 AM
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#4
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None |
Looks good! I have my auxiliary engine cooler in the same spot.
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chilling in vt |
Aug 19 2012, 03:56 PM
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#5
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Newbie Group: Members Posts: 26 Joined: 2-August 05 From: Manchester, VT Member No.: 4,528 |
Very nice! If you get a chance, could you post some pictures of the hook ups to the transmission? What kind of temps are you you seeing with the cooler? We are seeing 200-230 with a 2.5 liter six and a 901. Cooler is always better
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brumi |
Aug 21 2012, 10:09 AM
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#6
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Newbie Group: Members Posts: 10 Joined: 30-May 12 From: new york Member No.: 14,498 Region Association: North East States |
Very nice! If you get a chance, could you post some pictures of the hook ups to the transmission? What kind of temps are you you seeing with the cooler? We are seeing 200-230 with a 2.5 liter six and a 901. Cooler is always better Not a lot of light to get good pics of transaxle hookups. All braided lines Basically an o-ring boss outflow from the drain plug ( AN-8 ) Then thru filter, radiator, pump and then a return line that Ts off to a AN 8 into front of case and a AN 6 return thru intermediate plate No spray bars or nozzles, basically just get the oil out, cooled and back into box Never seen higher than 190 degrees |
brumi |
Sep 1 2012, 04:02 PM
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#7
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Newbie Group: Members Posts: 10 Joined: 30-May 12 From: new york Member No.: 14,498 Region Association: North East States |
To chilling in vt I had the car up for some servicing so I took a couple of pics of the cooler install , outlet with o ring boss, return ( -8 in case and -6 thru intermediate plate Ran at track in the mid 80s and temp ( sensor in red filter ) never exceeded190 Attached thumbnail(s) |
chilling in vt |
Sep 2 2012, 03:58 PM
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#8
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Newbie Group: Members Posts: 26 Joined: 2-August 05 From: Manchester, VT Member No.: 4,528 |
Thanks! That is one very clean car.
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brumi |
Sep 3 2012, 04:42 PM
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#9
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Newbie Group: Members Posts: 10 Joined: 30-May 12 From: new york Member No.: 14,498 Region Association: North East States |
Thanks
As my mentor in building race cars stressed to me over 25 years ago " there are dozens of reasons for not going fast, but no reason for being a slob " (IMG:style_emoticons/default/beerchug.gif) |
naro914 |
Sep 12 2012, 06:16 AM
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#10
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Losing my mind... Group: Members Posts: 2,476 Joined: 26-May 06 From: Charlotte, NC Member No.: 6,073 Region Association: South East States |
Pics of mine on this thread
http://www.914world.com/bbs2/index.php?sho...177277&st=0 and www.facebook.com/naroescapemotorsports |
larryM |
Nov 8 2012, 10:35 PM
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#11
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emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California |
but - WHY ??
it makes sense for a 24-hrs enduro World Makes Championship run in 1970-72 but vintage racing today is only about 15-20 minutes on track so why bother -?? (yep - i know - i BTDT - old age now questions the folly of my youthful fevers) . |
Trekkor |
Nov 9 2012, 12:16 AM
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#12
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
Nice pics.
Thank you! KT |
naro914 |
Nov 9 2012, 04:19 AM
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#13
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Losing my mind... Group: Members Posts: 2,476 Joined: 26-May 06 From: Charlotte, NC Member No.: 6,073 Region Association: South East States |
but - WHY ?? it makes sense for a 24-hrs enduro World Makes Championship run in 1970-72 but vintage racing today is only about 15-20 minutes on track so why bother -?? (yep - i know - i BTDT - old age now questions the folly of my youthful fevers) . Are you asking "why bother with trans cooling"? Agreed, if you're running stock engine, wheels, etc. probably no need. But I'm pushing 330 +/- hp with the stress of 12" wide slicks through a basically stock 901 trans that was build with about 100 hp in mind back in the day... THAT'S why. Plus, PCA enduro races are 90 minutes. |
bulitt |
Nov 9 2012, 05:20 AM
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#14
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Achtzylinder Group: Members Posts: 4,188 Joined: 2-October 11 Member No.: 13,632 Region Association: South East States |
This huge fan on the rear end is one approach.
(IMG:http://www.914world.com/bbs2/uploads_offsite/www.corvetteracing.com-13632-1352460015.1.jpg) |
brant |
Nov 9 2012, 09:22 AM
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#15
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914 Wizard Group: Members Posts: 11,618 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
With the trans cooler:
I'm getting 220 degree's after 20 minute vintage race with a 2liter on an 80 degree day at coronado island/sea level (I also ran at hallet, oklahoma which is 900ft above sea level. I still ran 220 on an 80degree ambient day) imagine what I was getting before the cooler at the event I blew the trans up last july. It was a 110 degree day and we had 2 drivers on the car that day, running back to back sessions at 5000ft of elevation where the air is less dense and cooling less efficient by far... I didn't have a gauge on it then, but I'm guessing 260f or more is the norm without a cooler (in a 20 minute session with a tiny 2.0 motor) I also would theorize that lower gears, smaller diameter wheels, more rpm and definitely a clutch limited slip differential would add to the heat problem if a person has any of those contributing factors. putting a gauge on the tranny is a real eye opener... no wonder everyone has always said the 901 couldn't handle high hp. I still believe its a 250hp tranny but that keeping oil temps in check is mandatory just like you would for a motor. for example, you don't hear people recommending to skip front coolers on race cars or that its a waste of time to install an oil temp gauge for an air cooled motor. brant but - WHY ?? it makes sense for a 24-hrs enduro World Makes Championship run in 1970-72 but vintage racing today is only about 15-20 minutes on track so why bother -?? (yep - i know - i BTDT - old age now questions the folly of my youthful fevers) . Are you asking "why bother with trans cooling"? Agreed, if you're running stock engine, wheels, etc. probably no need. But I'm pushing 330 +/- hp with the stress of 12" wide slicks through a basically stock 901 trans that was build with about 100 hp in mind back in the day... THAT'S why. Plus, PCA enduro races are 90 minutes. |
brant |
Nov 9 2012, 12:01 PM
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#16
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914 Wizard Group: Members Posts: 11,618 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
This huge fan on the rear end is one approach. (IMG:http://www.914world.com/bbs2/uploads_offsite/www.corvetteracing.com-13632-1352460015.1.jpg) an ideal placement for exit air on a 914 is the panel between the tail lights fine for a PCA car, but not legal for most vintage organizations... |
Retread |
Nov 10 2012, 03:03 PM
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#17
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Newbie Group: Members Posts: 26 Joined: 5-March 06 Member No.: 5,672 |
Very tidy car.What venues do you run?
I have had a temp guage on the tranny for many years. No LSD so temps are not to bad (those lsd clutches do add heat). I think the rational limit for uncooled 901 based gearboxes in competion is about 180 HP (as improved). Or 210 degees if you ar using Swepco. I run a stock class 914/4 2.0 car. It looks to me like the cooled oil is being spraed on the Ring gear. If so that is good, but not good if in the toothed side (from WEVO). I did not see a filter, which is a matter some concern, since tranies are a dirty world. B/r Retread V |
moggy |
Nov 12 2012, 03:28 PM
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#18
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Member Group: Members Posts: 192 Joined: 15-December 04 From: Wales Member No.: 3,285 |
This huge fan on the rear end is one approach. (IMG:http://www.914world.com/bbs2/uploads_offsite/www.corvetteracing.com-13632-1352460015.1.jpg) an ideal placement for exit air on a 914 is the panel between the tail lights fine for a PCA car, but not legal for most vintage organizations... I had the same problem. Here's my solution. I can't install the cooler anywhere under the car or in the inner wings due to the amount of crap flying around under there during a rally. Here's where I installed it (IMG:http://www.914world.com/bbs2/uploads_offsite/i31.photobucket.com-3285-1352755716.1.jpg) to then encourage some natural air flow I then drilled some holes in the bootlid under the kick spoiler and installed a grill (same look and feel as the engine grill). This is in a negative pressure air zone so will suck air through whilst retaining a stock ('ish) look. (IMG:http://www.914world.com/bbs2/uploads_offsite/i31.photobucket.com-3285-1352755717.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i31.photobucket.com-3285-1352755717.3.jpg) also, while I've got Photobucket open, here's my box (IMG:http://www.914world.com/bbs2/uploads_offsite/i31.photobucket.com-3285-1352755717.4.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i31.photobucket.com-3285-1352755717.5.jpg) |
steuspeed |
Nov 12 2012, 04:18 PM
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#19
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Senior Member Group: Members Posts: 1,005 Joined: 12-July 11 From: Portland, Oregon Member No.: 13,308 Region Association: Pacific Northwest |
^^^ Slick!
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