Hello,
just installed the black Vap lower crank pulley. The issue I’m having is the clearance between the new crank pulley and one of the other pulleys is to small. The belt will physically not fit. Has anybody ran into this before? See picture below.

 

Nope. Have not had the issue...all of the V8's are the same so should be fine if they sent the right one. I will say, the clearance is very slight as the Crank pulley is larger. I noticed how close mine was, but it did fit and has caused no issuse to dat.

DC

 

It’s crazy. I literally cannot fit the belt. I’ve pushed, bent, yelled, grunted & cursed. 😂. I wonder if my pulley has a tolerance issue. I’ve contact VAP. My plan for now it to install the oem pulley. 😩

 

OMG!! So I took the Vap pulley off, routed the loose belt over the pulley, tightened everything up to spec again. Now the belt is way to short. The belt is part number ending in 1470, which I believe is the largest belt provided by Vap. See pictures below. We are pulling like crazy, that belt is not going to give that much. The tensioner is maxed out 100% in the picture below. So pissed off right now!!

 

Mine was super tight too, but it went on. It seems like it won't, but go over the top outermost pulley last.

DC

 

Did you use any tools? Or just your hands? This bad boy is not stretching enough. My tensioner is at 100%.

 

You can use a plastic upholstery tool, but ultimately just have to nut it up. It is very tight, but it fits. Walk away and come back...and you will likely get it.

Also, from your picture, take it off of the end pulley, and run it over the one to the left first and then over the end one...

DC

 

If all else fails try slipping it on the tensioner last, from under the vehicle

 

Definitely want to thank the folks out at VAP. After multiple calls yesterday I was finally able to get the belt on YAY!! Had to add a few extra steps but the belt is on and the car is running strong. Chris @VelocityAP_Chris is awesome! I had to swap two idler pulleys, but this made all the difference in the world. It gave me additional clearance between one of the idler pulleys and the much larger crank pulley.
see picture below. I left the top idler pulley to the end. Success!! Also thank you forum members for chiming in and offering guidance.

 

SlowCat,

Great post, I am having the same issue but after reading your post will try the two idler pulleys. Just curious as to how changing pulleys makes a difference because the required length of belt for fitment remains the same. At this point though I am willing to try anything.

Philip

 

Pulleys are of different sizes so swapping them creates different paths of different lengths . Quite clever to do this. What is more interesting though is why some people need to do this and others don’t given everyone is supposedly using the exact same components made to exacting tolerances. The belt must be the only component that can vary in this scenario but I would have thought the tensioner would easily account for reasonably variations???

 

SlowCat,

Thank you so much for the information. The belt is on and I can’t believe the change the pully swap made. I left the pully closest to the super charger off until everything was routed. With the tensioner pulled all the way back and held into place with a zip tie I was able to install the last pully with the belt set in the grooves. Everything went back together easily, to the point I was spooked that something had to be wrong. I just got the car a month ago and in the process of getting as much out of my 2017 F-Type R car as possible.

Eventuri Intake system

Velocity Supercharger upper/lower/ECU Tuning STAGE 3

Velocity 200 Cell Sport Catalyst and Downpipe

Velocity XPipe Exhaust

ZF8HP70 Transmission Tune


Philip

 

Yes...You are correct. The tensioner in this application (VAP Lower/Crank Pulley and VAP Belt Provided) is completely maxed out...It is compressed to its limit for sure. Just FYI.

DC

 

Questions before I proceed with my install:

1. did VAP confirmed that swap of pulleys will not have any side effects?
2. does swaping both pulleys makes any difference in tensioner "play"? I mean if it is also maxed out?
In my opinion tensior is there to "work" but if it is maxed out all the time...I am not so sure about such solution.

 

Guardian,
After speaking with Chris form Velocity, it's a common coarse or action to make the pully swap to enable belt placement although some owners do not have to make the pully swap to route their new belt supplied by velocity. Chris did not state specifically of their not being a side effect however, the pullies swapped have no other purpose other than providing a guide from the supercharger to the crank. If they were accessory pullies, it may be different. I cannot say if there will be a negative in the long term, but other members may be able to answer that based on experience. The tensioner is at about 25% meaning there is about 75% left before being maxed out. I had the tensioner pulled all the way back and held in place with a zip tie. After the belt was completely routed and the zip tie removed the tensioner only moved about a quarter of the length. Please let me know if you have any other questions.
Philip


Jaguar F-TYPE R AWD Coupe - Polaris White / Jet - Eventuri Intake, VAP Stage 3, VAP 200 cell catalyst, VAP Exhaust, VAP transmission tune.

 

Thanks for the replies.
Sounds like the way to make it in proper way (with pulleys swap especially if they don't drive any accesorries). I just wouldn't feel comfortable having my tensioner maxed out all the time.

 

Guardian,
I would have been concerned with a maxed-out tensioner as well. From what I have read all f-types are not equal and have various deviations. My install went relatively well with the exception of changing the supercharger pully. By just changing the lower pully your belt may fall into place. Good luck with the install. I am new to jaguar due to coming up in the nissan/honda tuning world and have only had the f-type for a few months now. It is my opinion that the car is simply a work of art and looks amazing at every angle which is extremely rare in my opinion
Philip

 

Not rare in Jaguar's world, of course!

 

I just came across this thread, but wanted to add for future search results for the same. I too had the worst time trying to get the belt on. I swear by this point, I was so tired, my patience was probably shot. Ultimately (as Rock88 said earlier) that worked for me, the super charger pulley itself was the last pulley we put the belt on. I was under the car with the tensioner maxed out and a friend pulled the belt over. There was NO way otherwise I could have gotten it on. I did not swap the pulley's.

 

I don't get it. Why after so much effort didn't you just swap pulleys?
Now your tensioner is maxed out = it doesn't work as designed...