Upper pulley question
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
Upper pulley question
Hey guys, I'm thinking about swapping my 2.3 upper pulley to a 2.175 pulley. What is the best way to get to the tensioner bolt to remove the belt? A socket will not fit with the ABS unit right in front of it. Just a long 15mm wrench? Also, I've heard the stock belt is fine for this smaller pulley. What do you recommend? Thanks!
Melting Slicks
Joined: Oct 2007
Posts: 2,398
Likes: 858
Rock Auto 14 bucks. https://www.google.com/search?q=PERF...hrome&ie=UTF-8
You probably wont be able to get a full swing so go as far as you can then pry the belt half way off a pulley. Release the tensioner and get another bite on the tensioner nut with the tool or wrench. Now you will be able to rotate the tensioner to the full stop and remove the belt.
The original belt will work. It may or may not slip at high rpm.
This one is slightly shorter and gives you a little insurance against high rpm slippage. You can cross reference it to other belt makers if you like. https://www.rockauto.com/en/moreinfo...=4971096&jsn=1
You probably wont be able to get a full swing so go as far as you can then pry the belt half way off a pulley. Release the tensioner and get another bite on the tensioner nut with the tool or wrench. Now you will be able to rotate the tensioner to the full stop and remove the belt.
The original belt will work. It may or may not slip at high rpm.
This one is slightly shorter and gives you a little insurance against high rpm slippage. You can cross reference it to other belt makers if you like. https://www.rockauto.com/en/moreinfo...=4971096&jsn=1
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
Originally Posted by dar02081961
Rock Auto 14 bucks. https://www.google.com/search?q=PERF...hrome&ie=UTF-8
You probably wont be able to get a full swing so go as far as you can then pry the belt half way off a pulley. Release the tensioner and get another bite on the tensioner nut with the tool or wrench. Now you will be able to rotate the tensioner to the full stop and remove the belt.
The original belt will work. It may or may not slip at high rpm.
This one is slightly shorter and gives you a little insurance against high rpm slippage. You can cross reference it to other belt makers if you like. https://www.rockauto.com/en/moreinfo...=4971096&jsn=1
You probably wont be able to get a full swing so go as far as you can then pry the belt half way off a pulley. Release the tensioner and get another bite on the tensioner nut with the tool or wrench. Now you will be able to rotate the tensioner to the full stop and remove the belt.
The original belt will work. It may or may not slip at high rpm.
This one is slightly shorter and gives you a little insurance against high rpm slippage. You can cross reference it to other belt makers if you like. https://www.rockauto.com/en/moreinfo...=4971096&jsn=1
That Gates belt is actually still a little longer than my factory belt though. The factory belt is 85.118 and this Gates K080850HD is 85.375
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
Originally Posted by jimmythegreek69
Just use a long wrench on the pulley tensioner.
I’m using the factory belt with my 2.175” pulley and had no slippage during my recent dyno runs.
I’m using the factory belt with my 2.175” pulley and had no slippage during my recent dyno runs.
Did you change any fueling to run your 2.175 upper pulley? I have a flex fuel sensor and tune to run up to E40-E50 but I'm sure this pulley will lean it out a little?
Intermediate
Joined: Nov 2015
Posts: 26
Likes: 8
From: Grande Prairie, AB
Good to hear about the belt. I think I'll get this serpentine belt tool. Seems like it will allow better leverage. Thanks man!
Did you change any fueling to run your 2.175 upper pulley? I have a flex fuel sensor and tune to run up to E40-E50 but I'm sure this pulley will lean it out a little?
Did you change any fueling to run your 2.175 upper pulley? I have a flex fuel sensor and tune to run up to E40-E50 but I'm sure this pulley will lean it out a little?
I have a ported blower/snout, AFE intake and 95mm throttle body along with my 2.175” upper pulley.
I was thinking of adding a flex fuel sensor but E85 is not available where I live.
Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
Originally Posted by jimmythegreek69
I was definitely running lean before the dyno tune. I’m still just using 94 octane fuel available here in Alberta (has 10% ethanol)
I have a ported blower/snout, AFE intake and 95mm throttle body along with my 2.175” upper pulley.
I was thinking of adding a flex fuel sensor but E85 is not available where I live.
I have a ported blower/snout, AFE intake and 95mm throttle body along with my 2.175” upper pulley.
I was thinking of adding a flex fuel sensor but E85 is not available where I live.
Intermediate
Joined: Nov 2015
Posts: 26
Likes: 8
From: Grande Prairie, AB
I haven't had it down the strip yet with the new mods/tune. I need different tires though as I can't get any traction at our local track, I was spinning 3/4 of the way down the track with it stock...
I believe the AFR was tuned around 12.0 on the dyno with the O2 sensor in the tailpipe. I have a wideband to install, just haven't got time to install it yet.
I believe the AFR was tuned around 12.0 on the dyno with the O2 sensor in the tailpipe. I have a wideband to install, just haven't got time to install it yet.
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Thread Starter
Drifting
Joined: Apr 2015
Posts: 1,310
Likes: 93
From: Hager City WI
Originally Posted by jimmythegreek69
I haven't had it down the strip yet with the new mods/tune. I need different tires though as I can't get any traction at our local track, I was spinning 3/4 of the way down the track with it stock...
I believe the AFR was tuned around 12.0 on the dyno with the O2 sensor in the tailpipe. I have a wideband to install, just haven't got time to install it yet.
I believe the AFR was tuned around 12.0 on the dyno with the O2 sensor in the tailpipe. I have a wideband to install, just haven't got time to install it yet.
Racer
Joined: Sep 2018
Posts: 490
Likes: 132
Good info! I’m currently running the stock belt with a 2.38 pulley. Could just squeeze it on with fasterproms thermal plates installed. I’m currently running e50 with a kong ported blower, port matched LT5 TB, Norcal cat delete pipes, Borla catless x-pipe with BBE bi fusion axleback, Cordes 5” CAI, halltech ram air duct, 160 t stat and a NX blower lid. With 2 volts added to the low side in the tune, the psi is still holding better than it did before adding voltage on pump gas. High 50’s at redline. With pump gas it was holding 70psi across the board after adding voltage. I think I’m going to put my JMS voltage booster on along with a 2.175 pulley. Should be perfect.
Melting Slicks
Joined: Oct 2007
Posts: 2,398
Likes: 858
Shops are recommending the K08055 which is longer. https://www.gatespowerpro.com/Comerg...ctID=855298855
The K08085250 I recommended is shorter. https://www.gatespowerpro.com/Comerg...ctID=855298850
Effective length in the description is the key.
Trust me I have been down this road, wasted a bunch of man hours to end up here.