Worried about high oil temps?, and/or low oil pressure? |
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Worried about high oil temps?, and/or low oil pressure? |
ChrisFoley |
May 28 2014, 05:21 PM
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#1
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I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
A combination of high oil temp and low pressure seems to plague lots of 914 owners.
Engine modifications for more power often exacerbate the problem. Discussions frequently circle around the function of the primary pressure relief built into the crankcase near the oil filter. One member described how he reamed the bore and made a new piston, which seems to have solved his low pressure. I milled away a portion of a crankcase to have a better look inside the pressure relief circuit. What I found was significant wear, and evidence that the pressure relief was allowing oil to bypass the cooler most of the time. My newest product is designed to solve this problem. This little cylinder replaces the stock pressure relief piston and spring in the crankcase. Primarily what it does is eliminate the oil cooler bypass so the oil goes thru the cooler all the time. The precisely machined assembly will only allow oil above the preset peak pressure to bypass directly to the sump. It's also easy to change the max pressure by altering the piston length. Three prototypes have been made for testing. We installed the first one in a customer's 2.5L street/track car this afternoon. In the short time we ran the engine, improved oil pressure was immediately evident. Further tests will be done to see the effect on oil temp, but we aren't having hot weather here yet. The other two prototypes are being sent to people in warmer climates with competition cars, ready to put them to the test. I expect the benefit to be quickly apparent. (IMG:style_emoticons/default/smile.gif) |
76-914 |
May 28 2014, 06:40 PM
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#2
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,611 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
Another great product Chris. (IMG:style_emoticons/default/piratenanner.gif)
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57lincolnman |
May 28 2014, 07:55 PM
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#3
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Member Group: Members Posts: 174 Joined: 14-September 10 From: Los Angeles Member No.: 12,175 Region Association: Southern California |
We're having consistent 90 degree days down here in Atlanta. If you want to test the prototype here let me know. Looks very interesting. |
rudedude |
May 28 2014, 08:03 PM
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#4
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Senior Member Group: Members Posts: 516 Joined: 1-January 05 From: minneapolis, mn Member No.: 3,387 Region Association: Upper MidWest |
Let me know when they hit the market.
Jule |
Black22 |
May 28 2014, 08:52 PM
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#5
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
What, if any, modifications are required for installation? Can it be done to an assembled engine or installed block?
Way to go Chris! (IMG:style_emoticons/default/aktion035.gif) |
brant |
May 28 2014, 08:54 PM
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#6
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914 Wizard Group: Members Posts: 11,739 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
good one...
interested in one for from the when they hit the market I'll pm you... curious about a detail |
r_towle |
May 28 2014, 08:58 PM
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#7
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Custom Member Group: Members Posts: 24,624 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Cool, I am in.
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Ferg |
May 28 2014, 09:13 PM
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#8
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914 Guru Group: Members Posts: 5,948 Joined: 8-January 03 From: Boulder CO Member No.: 116 Region Association: None |
I am in.
I will also volunteer I have a bone stock 2.0 with about 800 miles on a crank up rebuild. I have a ir thermometer ect |
ChrisFoley |
May 28 2014, 10:39 PM
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#9
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I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
What, if any, modifications are required for installation? Can it be done to an assembled engine or installed block? Installation takes only a few minutes. No modification of anything is required. The hardest part will be loosening the cover. Be prepared for about a tablespoon of oil to come out. |
boxsterfan |
May 28 2014, 10:48 PM
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#10
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914's are kewl Group: Members Posts: 1,776 Joined: 6-June 03 From: San Ramon, CA Member No.: 791 Region Association: Northern California |
I would be very interested is this works well. Are you waiting for it to "prove" itself on a few test cases before making more?
Besides getting rid of the spring, any difference between this and the Weltmeister Oil Pressure Booster Kit? Easier install for sure as you don't have to mess around cutting the spring. The whole oil pressure relief setup is the last thing on my list to get "fixed" to help my oil temps (without going external cooler). |
aircooledtechguy |
May 28 2014, 10:55 PM
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#11
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The Aircooledtech Guy Group: Members Posts: 1,966 Joined: 8-November 08 From: Anacortes, WA Member No.: 9,730 Region Association: Pacific Northwest |
Wow!! I'm in for at least 1. Maybe 3. Is it too early for an approximate cost projection??
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ChrisFoley |
May 28 2014, 11:22 PM
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#12
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I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
I would be very interested is this works well. Are you waiting for it to "prove" itself on a few test cases before making more? Besides getting rid of the spring, any difference between this and the Weltmeister Oil Pressure Booster Kit? Easier install for sure as you don't have to mess around cutting the spring. The whole oil pressure relief setup is the last thing on my list to get "fixed" to help my oil temps (without going external cooler). I want some operating data before starting a production run. They may be available as soon as July. The Weltmeister kit still allows oil to bypass the cooler at relatively low oil pressures, and it doesn't solve the problem of wear inside the aluminum piston bore causing lower operating pressures across the entire rpm range. My assembly completely blocks the cooler bypass circuit, and is designed to stop leakage past the piston. Since the sleeve is steel, it will wear much more slowly. Preliminary cost projection is around $75. |
Mike Bellis |
May 28 2014, 11:25 PM
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#13
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Resident Electrician Group: Members Posts: 8,346 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Very Cool!!!
I don't even own a T4... |
Black22 |
May 29 2014, 12:05 AM
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#14
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
What, if any, modifications are required for installation? Can it be done to an assembled engine or installed block? Installation takes only a few minutes. No modification of anything is required. The hardest part will be loosening the cover. Be prepared for about a tablespoon of oil to come out. Wow! Great! |
euro911 |
May 29 2014, 12:15 AM
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#15
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Retired & living the dream. God help me if I wake up! Group: Members Posts: 8,855 Joined: 2-December 06 From: So.Cal. & No.AZ (USA) Member No.: 7,300 Region Association: Southern California |
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0396 |
May 29 2014, 04:21 AM
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#16
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Advanced Member Group: Members Posts: 2,046 Joined: 13-October 03 From: L.A. Calif Member No.: 1,245 Region Association: Southern California |
I'm in for one when production starts up.
Thanks |
Rleog |
May 29 2014, 05:30 AM
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#17
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Senior Member Group: Members Posts: 609 Joined: 12-October 03 From: Middleton, MA Member No.: 1,239 Region Association: North East States |
It's not proven yet; there's not much data yet, but there are likely more than a few really talented people saying, "Why didn't I think of that."
Here's a tip of that dark stout (IMG:style_emoticons/default/beer3.gif) to the creative, talented crew at Tangerine, great people. |
Krieger |
May 29 2014, 07:46 AM
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#18
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Advanced Member Group: Members Posts: 4,754 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None |
So, are there any negatives for flowing oil through the cooler all the time, or is that what is supposed to happen?
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CMONNETT |
May 29 2014, 12:16 PM
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#19
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Member Group: Members Posts: 150 Joined: 27-September 07 From: Cibolo, TX Member No.: 8,162 Region Association: Southwest Region |
I'll take two when you get these going.
Thanks, |
ChrisFoley |
May 29 2014, 12:22 PM
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#20
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I am Tangerine Racing Group: Members Posts: 7,958 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
So, are there any negatives for flowing oil through the cooler all the time, or is that what is supposed to happen? The only negative would be if your oil doesn't get to a good operating temperature. Actually, the stock system allows some oil through the cooler even when the bypass is open. The stock system is essentially a viscosity based thermostat. I think today's oils behave differently than what was in use back in the '70s so the same arrangement doesn't work so well anymore. |
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