Belt test question? How tight is the belt suppose to be on a supercharger?
10-14-2002, 01:23 AM
#1
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Belt test question? How tight is the belt suppose to be on a supercharger?
Alright I know that I am asking a noob question but cheston said that if the belt was too tight on the SCer it may blow the seals. I installed a new belt about two weeks ago and shaved down the plate. But one day while driving on the highway and at the Dyno I hear this high pitch squeal and turns out my belt was loose. Today I sinched down the belt and took it on a test drive. about 5800RPMS the belts is still squealing. Come back home and tightent it some more. I have about 1/4 play if not a bit more.
10-14-2002, 04:59 AM
#2
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I have some experience with Mustangs and superchargers. If your belt is tight but slips at high rpm maybe the supercharger mounting bracket is flexing and pulling the supercharger towards the crank. This makes the distance between the supercharger and crank shorter, loosening the belt. The best way to eliminate this is to brace the supercharger better. Can you get your hand in the center of the belt and squeeze. See if the supercharger moves even slightly. If it does then it will move even more under boost.
What width is your belt? If no flexing of the bracket is experienced then a wider belt may be needed. Belts are available up to 10 rib or you can go with a cogged belt. ASP can custom make any kind of pulley system you need for your application.
To answer your original question. I have tightened belts where I felt they were too tight but no damage was done to the supercharger or crank bearings. Best to get your set up right so the belt doesn't have to be so tight.
What width is your belt? If no flexing of the bracket is experienced then a wider belt may be needed. Belts are available up to 10 rib or you can go with a cogged belt. ASP can custom make any kind of pulley system you need for your application.
To answer your original question. I have tightened belts where I felt they were too tight but no damage was done to the supercharger or crank bearings. Best to get your set up right so the belt doesn't have to be so tight.
10-14-2002, 06:20 AM
#4
The part about checking to see if the s/c bracket is flexing cant happen on a maxima. I understand your point on mustangs, but the maxima has a CNCed bracket that has about 10 bolts hooking it up to the timing cover and engine mount and belt tensioner mounts.
Believe me when I tell you it is solid.
Dixit
Believe me when I tell you it is solid.
Dixit
10-14-2002, 06:39 AM
#5
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Originally posted by BigDogJonx
The part about checking to see if the s/c bracket is flexing cant happen on a maxima. I understand your point on mustangs, but the maxima has a CNCed bracket that has about 10 bolts hooking it up to the timing cover and engine mount and belt tensioner mounts.
Believe me when I tell you it is solid.
Dixit
The part about checking to see if the s/c bracket is flexing cant happen on a maxima. I understand your point on mustangs, but the maxima has a CNCed bracket that has about 10 bolts hooking it up to the timing cover and engine mount and belt tensioner mounts.
Believe me when I tell you it is solid.
Dixit
The Mustang brackets appear to be pretty solid too but when the belt is tightened the supercharger moves a few thousandths. Put an indicator on the supercharger and then start tightening the belt and see if it moves.
10-14-2002, 06:43 AM
#6
Originally posted by Larry
If that bracket is dead solid then you need to either tighten the belt more or get a wider belt.
If that bracket is dead solid then you need to either tighten the belt more or get a wider belt.
10-14-2002, 06:47 AM
#7
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Originally posted by Y2KevSE
We can't use a wider belt because it's VERY close to the bracket already (can't use a wider pulley either).
We can't use a wider belt because it's VERY close to the bracket already (can't use a wider pulley either).
10-14-2002, 07:04 AM
#9
http://mywebpages.comcast.net/dixits.../backplate.jpg
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
10-14-2002, 07:14 AM
#10
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Originally posted by BigDogJonx
http://mywebpages.comcast.net/dixits.../backplate.jpg
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
http://mywebpages.comcast.net/dixits.../backplate.jpg
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
Y2Kev everyone here thank you for the input I have the belt as you described Kev. Just trying to be safe I have no room for error or I am SOL if I bust a seal. I currently just own this one car.
10-14-2002, 07:19 AM
#11
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Posts: 369
Originally posted by BigDogJonx
http://mywebpages.comcast.net/dixits.../backplate.jpg
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
http://mywebpages.comcast.net/dixits.../backplate.jpg
That is a shot of the back plate that mounts to the timing cover, engine mount, belt tensioner holes and alternator mount.
As you can see this leaves absolutely no room for movement, believe me from experience of a failed s/c install. (in 2weeks that will turn into a PASSED install).
Dixit
10-14-2002, 09:33 AM
#12
Jamie, I run my belt over tightend, and have had no problems. Mine is only able to be twisted ~65deg. I run a GoodYear Gatorback belt.
You should check the belt and all the pullies for oil or dirt residue. You may need to clean the pullies and belt with some degreaser and a tooth brush.
FWIW I dont have any issues with a slipping belt.
You should check the belt and all the pullies for oil or dirt residue. You may need to clean the pullies and belt with some degreaser and a tooth brush.
FWIW I dont have any issues with a slipping belt.
10-14-2002, 09:40 AM
#13
Like Matt, mine is pretty tight too. I also have the Goodyear Gatorbelt. No belt problem so far and as you know me, I push the car hard, so the belt is holding up pretty good.
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