WTB - Metal Clutch Cable Pulley, Mine Keep Melting |
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WTB - Metal Clutch Cable Pulley, Mine Keep Melting |
motorvated |
Sep 10 2018, 07:02 PM
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#1
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
Switched over to a header/megaphone exhaust and quickly melted the stock white plastic pulley on the transaxle. Wrapped the headers and collector with fiberglass tape and installed a black delrin pulley, and promptly melted that one too. The collector sits very close to the pulley. I'm racing the car so things are getting pretty hot under there. Anyone have or know where I can get a metal pulley. I know that some were produced a while back, so if you have one in your parts stash that you won't be using, I could certainly use it. Thanks, Mike.
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1adam12 |
Sep 10 2018, 11:01 PM
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#2
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Member Group: Members Posts: 209 Joined: 25-May 17 From: Chino Hills, CA Member No.: 21,132 Region Association: Southern California |
You may want to look into some heat deflector sheets in the meantime. Either DEI or DCI will have some heat reflective material with adhesive backing that you could custom form to the back housing of the cable pulley housing and then use a heavy duty formable reflective sheet on the face exposed to the headers like a cover. You'll have to tin cut it to shape and then use safety wire to attach. Not the prettiest solution but could get the job done until you find an aluminum pulley wheel.
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mb911 |
Sep 11 2018, 04:20 AM
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#3
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914 Guru Group: Members Posts: 6,748 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest |
I thought ebay possibly?
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bdstone914 |
Sep 11 2018, 05:37 AM
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#4
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bdstone914 Group: Members Posts: 4,496 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Edit. I do not have them Was thinking thermostat pulley R. Bruce |
motorvated |
Sep 11 2018, 07:37 AM
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#5
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
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Mikey914 |
Sep 11 2018, 07:46 AM
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#6
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The rubber man Group: Members Posts: 12,622 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
That's a lot of heat. May want to check your trans fluid on a regular basis.
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motorvated |
Sep 11 2018, 10:14 AM
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#7
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
That's a lot of heat. May want to check your trans fluid on a regular basis. Fresh oil and one race weekend for the last melted one. Pedal felt fine the whole time, but felt odd when driving the car out of the trailer about a week later. Tranny has a Quaife in it and I'm running it pretty hard. This probably belongs in the Garage if the discussion continues. |
motorvated |
Sep 12 2018, 05:28 PM
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#8
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
That's a lot of heat. May want to check your trans fluid on a regular basis. Fresh oil and one race weekend for the last melted one. Pedal felt fine the whole time, but felt odd when driving the car out of the trailer about a week later. Tranny has a Quaife in it and I'm running it pretty hard. This probably belongs in the Garage if the discussion continues. BTT - Still Looking. |
cary |
Sep 13 2018, 07:56 AM
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#9
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Advanced Member Group: Members Posts: 3,900 Joined: 26-January 04 From: Sherwood Oregon Member No.: 1,608 Region Association: Pacific Northwest |
Could try this. Moves it away from the gear box.
Do you a transmission cooler ? |
Larmo63 |
Sep 13 2018, 08:41 AM
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#10
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
I used Chris's excellent Tangerine pulley adapter that Cary mentions above.
That, and a Patrick Motorsports pulley.... |
GregAmy |
Sep 13 2018, 09:09 AM
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#11
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Advanced Member Group: Members Posts: 2,262 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
A simple piece of roof flashing (or .040" aluminum if you want to be fancy) is all you need to block the radiant heat from the exhaust.
The header on my Integra Super Touring car flowed right below the oil pan, about 2" away. I was seeing stoopit oil temps. I added some aluminum flashing mounted about halfway between the header and oil pan. Oil temps dropped 30 degrees. Just make sure the flashing is not mounted up against the pulley, since conduction will get it there anyway. |
rhodyguy |
Sep 13 2018, 09:53 AM
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#12
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,042 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Thermal barrier coat your headers.
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JamesM |
Sep 13 2018, 05:24 PM
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#13
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Senior Member Group: Members Posts: 1,872 Joined: 6-April 06 From: Kearns, UT Member No.: 5,834 Region Association: Intermountain Region |
Are you sure there is not something else going on with the tune of your car? That seems like a lot of heat in your exhaust.
Running a similar setup on my autocross car with the 4-1 collector running right by the clutch pulley. Prior to jet-hot coating and a custom bracket to angle the clutch cable slightly lower, the best I was able to do was melt the cable sheath where it ran close to the pipes. Melting the pulley that is not in direct contact with the exhaust just seems like a crazy amount of heat. Retarded timing can cause some really high EGTs, just saying. |
Larmo63 |
Sep 14 2018, 12:11 AM
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#14
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
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Mikey914 |
Sep 14 2018, 04:05 PM
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#15
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The rubber man Group: Members Posts: 12,622 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
Is that a delrin pulley? Or just powder coated.
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Larmo63 |
Sep 18 2018, 10:28 AM
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#16
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
That is the Patrick Motorsports pulley that they sell.
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barefoot |
Sep 19 2018, 08:31 PM
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#17
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Senior Member Group: Members Posts: 1,264 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States |
Measure your fully and look in McMaster Carr online. they have all kinds of industrial stuff & may have something close that you may have to drill out the center hole to fit.
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motorvated |
Sep 20 2018, 10:11 AM
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#18
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Member Group: Members Posts: 279 Joined: 13-February 13 From: Colorado Member No.: 15,519 Region Association: Rocky Mountains |
Great suggestion. Looks like they have both finished pulleys and blanks that can be machined. Might find something that will work.
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Chi-town |
Sep 21 2018, 09:39 AM
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#19
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Senior Member Group: Members Posts: 850 Joined: 31-August 18 From: Disneyland Member No.: 22,446 Region Association: Southern California |
That kind of radiant heat is damaging a lot of other things besides that plastic pulley. I can't imagine what your trans oil temps look like. (IMG:style_emoticons/default/blink.gif)
Pick up one of these: https://www.harborfreight.com/hand-tools/th...eter-63985.html Point it at the trans, CV's, and clutch pulley after a hard run. This will give you a better idea of what you are dealing with as far as radiant heat. I would also invest in a wideband O2 set up and double check your fueling because if the exhaust is that hot your exhaust valves and seats probably aren't going to last long at all. If your fueling and ignition are spot on , then I would look into Jet-Hot or Zercotec not only to protect surrounding components but to lower engine bay temps and make more power. |
Mikey914 |
Sep 21 2018, 10:28 AM
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#20
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The rubber man Group: Members Posts: 12,622 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None |
My question is are you running a synthetic trans fluid?
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