Anyone tried this? Supercharger Pulley Puller Install Tool GTP GS SSEi M90 Use & Return *Rental* | eBay

 

No but this one works well for both the install and removal

ZZP Supercharger Pulley Puller Removal & Installer Tool, Eaton M90 M112 M62 | eBay

Cheers
34by151

 

Has anyone done this? There claiming 50 HP gain Jaguar 4.2L Supercharger Porting & Pulley Package, Eurotoys Ltd.

 

Yes.

 

I forgot about this... sadly for me that info came too late and I already had the 3lb pulley fitted on my XJR, it's been on for 4 years now.

This is probably why the trap speeds have not been so impressive with the tune...

Oh the wisdom of hindsight...

 

I am considering taking off my 3lb pulley and putting on the 1.5lb one.

Before I do that I want to get the car dyno tested. So it will be late Summer some time.

 

Cambo, Do you have info on your custom tune and pricing yet?

 

Well there was quite a bit of info in your other thread https://www.jaguarforums.com/forum/x...-168474/page6/

My target with the tune was to run 12.99 @ 110mph, well so far I acheived part of that, with the 12.93 @ 107.21mph https://www.jaguarforums.com/forum/x...5/#post1663586

Trying to get a benchmark of what is a "good result" has been a bit difficult. Obviously this is a big improvement over previous bests of around 12.3 @ 105-106mph, which seems to be the typical numbers of these XJR's, but I still did not hit the trap speed target.

It's a bit hard to come up with a benchmark, given that an XJR is not going to be as quick as an STR (because of the bigger wheels mostly) but I was looking at 1320racers best numbers in his STR of 109.48mph trap https://www.jaguarforums.com/forum/s...109-mph-63743/ and 12.916 as per his signature. Getting an XJR to run quicker than an STR would be a good result.

In the meantime this thing about the 3lb pulley actually running slower traps than the 1.5lb pulley has come up. Which means on top of the handicap of running an XJR, I also have that damn 3lb pulley on it which looks to be quite a limiting factor.

I've checked a couple of other "issues" regarding the state of the engine in this car as well, to be sure that it's really at it's best (despite having nearly 119'000miles on it now) and it looks like I found an issue with the MAF, a new MAF is in and we got some higher measured flow rates with the new MAF (386g/s with the new one, vs. 363g/s with the old one) which would theoretically mean another ~20rwhp in the top end has been found. It feels stronger and smoother now with the new MAF so i'm hopefull that will get the trap speed up.

Going to the track tonight so fingers crossed we get some better results.

Using 1320racer's results as a reference, he lost ~2mph going to the 3lb pulley from the 1.5lb. If that was the same on my XJR i'd be at 109mph now instead of 107mph, and with the fix of the MAF, hopefully i'll get over 108mph in it's current state, which would be an equivalent to 110mph i.e. the goal.

Some pretty good excuses yeah?

Honestly I feel I need to get some good numbers at the track in order for the tune to be sellable. I know some guys in the UK who paid good money to get their 2003-2005's "remapped" and it didn't make any noticeable difference, apart from a lighter wallet. That's not good enough for me.

 

The MAF is the same in shape, so there is no addition airflow, other then a different reading. That reading can of course have big effect, low end and top end. Low end (closed loop) the ECU will learn the ltft values that will apply top end (open loop). So assuming here that the low end was roughly the same between the MAFs, then now with the higher reading the a/f mixture will be slightly richer.

But another thought to get more power; it would be interesting to get a good vacuum reading, that will show how much you can get out of improving the intake, do you have a reading ?

 

Good luck mate! Some guys over here have paid eye watering amounts to have their cars remapped. I'm soon meeting one of the guys on the UK forum who has the most powerful Eaton powered STR I've ever seen. It made 374rwhp on Viezu's MAHA LPS 3000 dyno which is a load based dual drum dyno known to read low. That was with a 1.5lb pulley, their tune, miltek 200 cell cats and sport backboxes. He's now added an intake tube so is probably over 380rwhp even on this conservative dyno.

Viezu have a pretty good database for tuned and stock 4.2 and 5.0 s/c Jags and said it's the most powerful STR they've tested. I've seen a stock X150 5.0 XKR only make 400rwhp on their dyno recently and a XFR from a member on this forum only made 420rwhp with intake modifications. With a tune and pulley AJ133S cars make around 480rwhp on their dyno which is again low compared to Dynojet numbers. I would be very interested to see what his car would trap at the track, probably around 112mph I'd guess, so will ask if he's interested in going.

As a side note, going back to the Eaton my peak MAF reading is now down to 405g/s and acceleration numbers quite significantly slower. It seems the supercharger itself is really the easiest, although expensive, way to make power on these cars.

 

1st run, bad launch, trapped 108.06mph

 

ah ha sweet !!!

 

Well it was a blow-out last night. That first run was the only one worth mentioning.

Sydney Dragway cleaned and re-surfaced the track last weekend, and it's worse than the street for traction. Pretty much a waste of a night. The last run I had to back out of it and coast to the end, after fishtailing my way down the first third of the track.

I don't think i'll get a chance to head back any time soon either. So that's it, 108.06mph, and 12.9's, maybe 12.8's.

I'm really pissed that I put the 3lb pulley on this car years back. At the time I didn't know, I don't think anyone knew.

With the 1.5lb pulley, I guess 12.7's and 110mph would be possible in the XJR, and even quicker/faster in an STR.

 

Well cambo that is fantastic considering the surface conditions then , two weeks in a row you have shown marked improvements,
And that's good enough for me to see there is a gain from both the tune and the dicky MAF senser , as you know I've been down the dicky MAF sensor path , with god smacking results after replacement, so it shows how reliant thes engines are on having healthy sensors to have a healthy engine !!

it looks like over 20hp both weeks , so you've got to be happy with that . And the XJR must be feeling better than new !
I understand your frustration with the 3# pulley , I was lucky enough to turn up to the jaguar party very late , and clever enough to study the pros and cons of each and every mod I've done to the STR ,thanks to the forum and all the test mules that have been tested before my time here , and lucky for me there were a lot of threads warning about the cons of the 3# vs The 1.5# pulleys , mainly IAT warnings not so much trap speed warnings , that one I missed ! Regardless don't be too hard on your self , you thort you were doing the right thing at the time , with no one telling you otherwise, not entirely your fault .
You have sill come out the other end with the fastest eaton powered x350 known to man kind , that's a feather in your cap , not somthing to be pissed off about .
I guess you have amo up your sleeve now if some one challenges you .
Great work !

 

I completely forgot that when I had PSE rebuild my 2005 XJR Gen V SC they not only did the S porting and 2.6 pulley but also replaced the rotor and gear assembly with that from a 2007 car to get the "better" gearing that 2006 MY on cars came with.

 

Jackra, Is the performance gain what they claim? How did the power feel before and after?

 

Originally I was disappointed as I did not "feel" a significant change.

Later after some driving I was a bit happier.

Since then I have added 200 cel cats, upgraded SC pump, additional SC radiator with fans, and a stage 1 intake. Also took out the flap in the OEM filter housing.

Also with the Quaife LSD driving the car now is totally different to what it was.

The cost per hp gain I think is quite high the route I went.

Also the smallest pulley, as others have said, loses power at the high end.

I do not notice that as I use mid range for most of my driving but do a few pedal to the metal take offs.

I did do some runs the other day but only up to about 65 mph where I observed max MAF readings of 376. Which by all accounts is rather disappointing.

 

Quote from PSE: "​I've look at your invoice xxxx and I do not see any special indication on your paperwork indicating whether or not your supercharger had straight cut gears or helix gears. If your model did have helix gears or the replacement we happen to have had helix gears then I'm sure he was just indicating that the helix gear models tend to run a little bit quieter otherwise there is no difference. I hope this is answered your question".

Looks like I was wrong about the gearing. So much for my memory!

 

That's kinda' disappointing news. Thanks for your honesty and first hand opinion! Think I am going to install a 1.5 lb pulley with my existing cold air intake, flap mod, and panel filter and call it a day...Another question is that these years XJRs are actually 390 HP? Most things I see on the web claim 400...

 

I have read quite a few "performance" ratings for the 2004 - 2007+ XJR and it seems to me that around 2004 most rate the XJR at 390 hp after 2006 many seem to rate it at 400 hp.

I know that there were significant electrical changes in 2006 and I know that the TB is controlled differently. I dont know of any other changes such as VVT.

Cambo has stated that the tune he is working on looks more promising on the 2006+ XJR than the pre 2006 XJR.