How To: VelocityAP Supercharger Crank Pulley
#21
03-30-2019, 11:54 AM
Senior Member
Appreciate the guide, and the belt routing was pretty much the same on the V6. Just did my install this past weekend.
Couple of tips:
- Remove the belly pan under the engine as well, only a couple more bolts and it gives better sightlines and a bit more reach through area.
- I pulled the intake "Y" tube to clear up getting to the blower snout to remove and reinstall the belt. Required loosening 3 clamps, and taking out 3 10mm head bolts, was worth the trouble.
- On my V6S automatic the crank turned when I tried to loosen the pulley bolts. A 24mm (or 15/16") socket on a 1/2" breaker bar on the crank bolt held it still.
The blower pulley bolts are indeed a total PITA, one so tight I had to keep the crank bolt held still the entire length of removing it. Plan on spending a lot of time, but do take the time, you really don't want to strip out a torx head bolt.
Couple of tips:
- Remove the belly pan under the engine as well, only a couple more bolts and it gives better sightlines and a bit more reach through area.
- I pulled the intake "Y" tube to clear up getting to the blower snout to remove and reinstall the belt. Required loosening 3 clamps, and taking out 3 10mm head bolts, was worth the trouble.
- On my V6S automatic the crank turned when I tried to loosen the pulley bolts. A 24mm (or 15/16") socket on a 1/2" breaker bar on the crank bolt held it still.
The blower pulley bolts are indeed a total PITA, one so tight I had to keep the crank bolt held still the entire length of removing it. Plan on spending a lot of time, but do take the time, you really don't want to strip out a torx head bolt.
Just did my crank pulley with Stohlens' procedure and 2Cools' tips - they were spot on. The crank turned on my V6S automatic too and three of the bolts required holding the crank with the strap wrench the whole way being unscrewed. Couldn't find my 24mm or 15/16" sockets (found every other one that I have that is bigger or smaller though) so I used a rubber strap wrench instead. Also used my new Quickjack for the job they made the it way, way easier.
Updated the tune for the pulley and went out for a test drive. Power increase was very noticeable but the supercharger belt slipped/squealed really badly under full throttle acceleration. Already contacted Stuart for a belt that is correctly sized. Not looking forward to removing the pans and snaking the belt into the pulleys again.
Last edited by RGPV6S; 03-30-2019 at 12:29 PM.
#22
03-30-2019, 01:24 PM
Veteran Member
Did you convert to a one sided belt or are you still working with a 2 sided belt? If 2 sided, you can use a DK080568 belt. Since these are produced in large quantities, you are less likely to get bitten with significant length variations based on the production run.
Last edited by Unhingd; 03-30-2019 at 01:41 PM.
#23
03-30-2019, 05:59 PM
Senior Member
The new two sided belt. I'll see how VAP responds first before getting the one you suggested.
#24
03-31-2019, 02:02 PM
Senior Member
From the belt routing photo of the front of the engine it doesn't look like a shorter belt would change the belt wrap on the crank pulley due to tensioner movement.
Last edited by RGPV6S; 03-31-2019 at 02:40 PM.
#25
03-31-2019, 02:52 PM
Veteran Member
Did some research on the belt part number you suggested. It looks to be shorter than the original green single sided VAP belt (K080575HD) by 17mm (0.67") and 16mm shorter than the 1460mm that VAP said they were shooting for on the new double sided belt. Do you think the tensioner would accommodate that? Also do you think the increased belt tension would cause any bearing loading issues?
From the belt routing photo of the front of the engine it doesn't look like a shorter belt would change the belt wrap on the crank pulley due to tensioner movement.
From the belt routing photo of the front of the engine it doesn't look like a shorter belt would change the belt wrap on the crank pulley due to tensioner movement.
BTW, the VAP belt is probably a DK080575. The D stands for double sided.
#26
03-31-2019, 03:45 PM
Senior Member
Anyway if your upper pulley is 58.5 and the stock is 62mm with half a wrap the difference in belt length would be ~5.5mm if my calculations are right.
#27
03-31-2019, 08:24 PM
Veteran Member
Checked that part number on the Gates website. No such part can be found using the search function on the site. Also I thought the stock upper pulley was 62mm on the V6S. If so yours is 58.5mm? I thought the smallest upper pulley that would fit was about 60mm.
Anyway if your upper pulley is 58.5 and the stock is 62mm with half a wrap the difference in belt length would be ~5.5mm if my calculations are right.
Anyway if your upper pulley is 58.5 and the stock is 62mm with half a wrap the difference in belt length would be ~5.5mm if my calculations are right.
#28
04-06-2019, 02:46 PM
Senior Member
Got one of the belts suggested by Unhinged and installed it. It worked fine. No detectable squeal or slippage. On my car the tensioner arm was more centered over its travel arc with the shorter belt. With the VAP belt it was almost out of travel.
BTW the VAP belt I took off measured at 1461mm. Almost exactly what VAP specified that it should be.
With the new crank pulley the car has way more supercharger whine and is way more eager to go. Well worth the money and trouble to install it.
BTW the VAP belt I took off measured at 1461mm. Almost exactly what VAP specified that it should be.
With the new crank pulley the car has way more supercharger whine and is way more eager to go. Well worth the money and trouble to install it.
Last edited by RGPV6S; 04-06-2019 at 02:53 PM.
#29
04-06-2019, 04:31 PM
#30
04-06-2019, 04:35 PM
Veteran Member
#32
04-06-2019, 04:52 PM
Veteran Member
#33
04-06-2019, 04:54 PM
Senior Member
#34
04-06-2019, 09:39 PM
Sponsor
Hi Guys,
The Gates belt will work, but isn't an HD belt. There are actually 4 different OEM belt lengths between Jaguar and LR/RR. On the Jaguar side, the length isn't related to V6 vs V8, but rather it is related to the type of tensioner assembly the engine has. We believe JLR changed the tensioner assembly because the belt proximity was too close to one of the brackets and was rubbing. We've seen evidence of this on a few cars.
We didn't rush into manufacturing a shorter, double sided HD belt because we wanted to ensure we had options that would work across all the JLR platforms and that we could find two belt lengths which would cover all of them effectively. Won't have stock of the shorter belt immediately but they are on the way.
The Gates belt will work, but isn't an HD belt. There are actually 4 different OEM belt lengths between Jaguar and LR/RR. On the Jaguar side, the length isn't related to V6 vs V8, but rather it is related to the type of tensioner assembly the engine has. We believe JLR changed the tensioner assembly because the belt proximity was too close to one of the brackets and was rubbing. We've seen evidence of this on a few cars.
We didn't rush into manufacturing a shorter, double sided HD belt because we wanted to ensure we had options that would work across all the JLR platforms and that we could find two belt lengths which would cover all of them effectively. Won't have stock of the shorter belt immediately but they are on the way.
__________________
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
Stuart Dickinson
Managing Director
VelocityAP Industries Ltd.
O: (1)250-485-5126
E: Stuart@VelocityAP.com
www.velocityap.com
#35
04-07-2019, 06:48 AM
Senior Member
Hi Guys,
The Gates belt will work, but isn't an HD belt. There are actually 4 different OEM belt lengths between Jaguar and LR/RR. On the Jaguar side, the length isn't related to V6 vs V8, but rather it is related to the type of tensioner assembly the engine has. We believe JLR changed the tensioner assembly because the belt proximity was too close to one of the brackets and was rubbing. We've seen evidence of this on a few cars.
We didn't rush into manufacturing a shorter, double sided HD belt because we wanted to ensure we had options that would work across all the JLR platforms and that we could find two belt lengths which would cover all of them effectively. Won't have stock of the shorter belt immediately but they are on the way.
The Gates belt will work, but isn't an HD belt. There are actually 4 different OEM belt lengths between Jaguar and LR/RR. On the Jaguar side, the length isn't related to V6 vs V8, but rather it is related to the type of tensioner assembly the engine has. We believe JLR changed the tensioner assembly because the belt proximity was too close to one of the brackets and was rubbing. We've seen evidence of this on a few cars.
We didn't rush into manufacturing a shorter, double sided HD belt because we wanted to ensure we had options that would work across all the JLR platforms and that we could find two belt lengths which would cover all of them effectively. Won't have stock of the shorter belt immediately but they are on the way.
#36
04-07-2019, 08:31 AM
Veteran Member
I did some research on the Gates fitment guide and the DK080568 belt is the recommended supercharger one for Range Rover 3.0L and 5.0L engines for at least 2014 through 2016 up to a specific VIN number where it changed. Maybe that is when they changed the tensioner design.
#37
04-11-2019, 06:33 PM
#38
04-11-2019, 06:35 PM
Sponsor
Need a new tune. If you buy the pulley from Us or from one of our dealers there is no charge to update the software it is free
#39
04-12-2019, 01:24 PM
For all AJ 3.0 engines F-Type you need a to re-tune for the crank pulley if you started with your standard tune? (sorry I am being thick, but your website is a little confusing)
#40
04-12-2019, 01:53 PM
Senior Member
If you have the stock tune on your car and you replace the crank pulley with the larger one from VAP you will need to modify the tune so your ECU can take advantage of the extra boost and not throw overboost codes.