How To: VelocityAP Supercharger Crank Pulley
#141
Hi. There are two different belt lengths we supply, and two different crank pulley offsets. Either could be wrong. I would recommend contacting us with your order number and we can confirm.
When the orders are placed on our website it requests your OEM crank pulley colour and your VIN so we can size the belt correctly.
When the orders are placed on our website it requests your OEM crank pulley colour and your VIN so we can size the belt correctly.
#142
Definitely check the belt routing, lots of pics online of the front engine view:
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
#143
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JacksonvilleJag (07-14-2020)
#144
Definitely check the belt routing, lots of pics online of the front engine view:
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
Btw, there's 2 crank pulley versions Silver vs Black. If you have a Silver pulley stock, you need to install a Silver pulley. The color is not a choice of preference, it's to correctly align the different belt offset.
We do have 2 different belt sizes, 1438mm and 1461mm, if you had trouble fitting the 1461mm, odds are you have a belt that fits snugg/tight (no chance of slipping). My guess would be belt not routed correctly OR wrong pulley offset installed.
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
Btw, there's 2 crank pulley versions Silver vs Black. If you have a Silver pulley stock, you need to install a Silver pulley. The color is not a choice of preference, it's to correctly align the different belt offset.
We do have 2 different belt sizes, 1438mm and 1461mm, if you had trouble fitting the 1461mm, odds are you have a belt that fits snugg/tight (no chance of slipping). My guess would be belt not routed correctly OR wrong pulley offset installed.
Good info. Thanks for sharing!
#145
Originally Posted by Tuning@VelocityAP View Post
Definitely check the belt routing, lots of pics online of the front engine view:
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
Btw, there's 2 crank pulley versions Silver vs Black. If you have a Silver pulley stock, you need to install a Silver pulley. The color is not a choice of preference, it's to correctly align the different belt offset.
We do have 2 different belt sizes, 1438mm and 1461mm, if you had trouble fitting the 1461mm, odds are you have a belt that fits snugg/tight (no chance of slipping). My guess would be belt not routed correctly OR wrong pulley offset installed.
Definitely check the belt routing, lots of pics online of the front engine view:
http://i0.wp.com/thegermantooltruck....5/10/aj133.jpg
Btw, there's 2 crank pulley versions Silver vs Black. If you have a Silver pulley stock, you need to install a Silver pulley. The color is not a choice of preference, it's to correctly align the different belt offset.
We do have 2 different belt sizes, 1438mm and 1461mm, if you had trouble fitting the 1461mm, odds are you have a belt that fits snugg/tight (no chance of slipping). My guess would be belt not routed correctly OR wrong pulley offset installed.
#146
Is it easier if you do mina intake and crank pulley together? how much needs to be taken down if you want to access the crank pulley area directly?
When I told my shop I wanted to install the crank pulley, they said they'd need to heat it to fit, I think they are thinking about the supercharger pulley instead.
is there anything else you can change while doing crank pulley and mina intake? im thinking upgrading coolant pipes so it doesn't burst out of nowhere!
I will print out this guide for them to reference, should make it easier even though they said they know what to do! Thank you for the great and detailed write up!!!
When I told my shop I wanted to install the crank pulley, they said they'd need to heat it to fit, I think they are thinking about the supercharger pulley instead.
is there anything else you can change while doing crank pulley and mina intake? im thinking upgrading coolant pipes so it doesn't burst out of nowhere!
I will print out this guide for them to reference, should make it easier even though they said they know what to do! Thank you for the great and detailed write up!!!
#147
#148
Is it easier if you do mina intake and crank pulley together? how much needs to be taken down if you want to access the crank pulley area directly?
When I told my shop I wanted to install the crank pulley, they said they'd need to heat it to fit, I think they are thinking about the supercharger pulley instead.
is there anything else you can change while doing crank pulley and mina intake? im thinking upgrading coolant pipes so it doesn't burst out of nowhere!
I will print out this guide for them to reference, should make it easier even though they said they know what to do! Thank you for the great and detailed write up!!!
When I told my shop I wanted to install the crank pulley, they said they'd need to heat it to fit, I think they are thinking about the supercharger pulley instead.
is there anything else you can change while doing crank pulley and mina intake? im thinking upgrading coolant pipes so it doesn't burst out of nowhere!
I will print out this guide for them to reference, should make it easier even though they said they know what to do! Thank you for the great and detailed write up!!!
Last edited by RGPV6S; 12-23-2020 at 04:07 PM.
#150
Just got the new pulley and belt on, will finish up tomorrow as it's pretty late. Also, VAP got me my tune in around 24 hours
Some notes that may or may not help someone in the future:
.
All in all, thanks for the great DIY.
Some notes that may or may not help someone in the future:
.
- The back of the radiator shroud is out for blood, definitely wear gloves when reaching up from below!
- Lighting! Get one of those $3 harbor freight LED lights, it will magnetically stick on the back of the radiator fan. Super convenient location as it shines light directly on the crank pulley.
- Be careful where you stick your ratchet working with the tensioner, after I got the belt off my ratchet was jammed on the subframe and I couldn't get it or the OEM belt out. Had to put the belt back on, adjust and redo.
- I used a breaker bar to break the blue loc-tite on the crank pulley bolts but was able to use a standard 3/8 ratchet after that
- My pulley did not slide off, I had to pry it off by sticking a flathead in between the pulley and the serpentine belt pulley behind it.
- Harbor Freight tap and die kits are crap. Wasted a day here.
- Putting on the new belt was easier than I was expecting (OEM silver pulley on a V6S).
All in all, thanks for the great DIY.
#151
#152
Yes definitely! I haven't given the car a chance to really stretch its legs on a proper drive but I went for a 5-10 mile drive on a somewhat curvy 2-laner and you can tell the car is significantly more powerful.
The torque increase starting as low as 2K RPM makes the car so much more pleasurable to drive. It really feels like I can be in any gear (MT) and hit the throttle and just go. The car also pulls much harder at high RPMs.
Previously, the car was quick but not really fast. Now, it really feels fast, like the M4 (425hp, 3500lb) I test drove before buying the F-Type. Honestly, I would say this is the best bang for buck mod you can do on the V6. It makes the car perform like it looks.
The torque increase starting as low as 2K RPM makes the car so much more pleasurable to drive. It really feels like I can be in any gear (MT) and hit the throttle and just go. The car also pulls much harder at high RPMs.
Previously, the car was quick but not really fast. Now, it really feels fast, like the M4 (425hp, 3500lb) I test drove before buying the F-Type. Honestly, I would say this is the best bang for buck mod you can do on the V6. It makes the car perform like it looks.
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OzXFR (12-31-2020)
#154
#155
I'm also running on a 91 tune, I'm probably giving up around 10hp if it aligns with other 91 vs 93 tests I've seen online. I actually reached out about a 93 tune.. wouldn't mind running an octane booster through each tank as I don't put commute miles on this car anyways.
#156
I contacted VAP about this, they said that many of their clients in CA run an ethanol mixture with their 91 to boost the octane. Chris also said that they would be experimenting with ethanol mixtures themselves in the late summer.
I was unable to figure out whether 91 and 93 were separate tunes, or the car just pulls timing.
I was unable to figure out whether 91 and 93 were separate tunes, or the car just pulls timing.
#157
#158
Pulley
Hi
The pulley and tensioner and belt is very expensive at either $1000.00 or 1000.00 pounds. I can get the lower pulley made for under $100.00 and match a belt. Do I need some form of modifies tensioner pulley? WHat size should I go on the lower pulley? I see there is 11.8% and 15%
The pulley and tensioner and belt is very expensive at either $1000.00 or 1000.00 pounds. I can get the lower pulley made for under $100.00 and match a belt. Do I need some form of modifies tensioner pulley? WHat size should I go on the lower pulley? I see there is 11.8% and 15%
#159
Hi
The pulley and tensioner and belt is very expensive at either $1000.00 or 1000.00 pounds. I can get the lower pulley made for under $100.00 and match a belt. Do I need some form of modifies tensioner pulley? WHat size should I go on the lower pulley? I see there is 11.8% and 15%
The pulley and tensioner and belt is very expensive at either $1000.00 or 1000.00 pounds. I can get the lower pulley made for under $100.00 and match a belt. Do I need some form of modifies tensioner pulley? WHat size should I go on the lower pulley? I see there is 11.8% and 15%
There are two options
Increase lower pulley by 15%
Increase lower pulley by 11.8% and decrease upper pulley by 6%
Is this correct?
#160
Yes, as I understand you have it correct - I do not know the percentages, however. I was under the impression there was only one lower pulley offered, and one upper pulley offered. The combination of both gives more flow, but I'm led to believe is very much challenging the heat exchangers.
I'm assuming you know you can't run the higher boost without some ECU map/programming changes.
I'm assuming you know you can't run the higher boost without some ECU map/programming changes.