XJR6 Powerhouse pulley
#1
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My XJR has recently had a new radiator, all new cam drive chains and tensioners, new octopus hose, rebuilt crank harmonic balancer (was slipping), new front sway bar bushes, replacement cooling fans (one had died), and a new cooling fan relay (totally died).
I sourced a secondhand XJR-specific harmonic balancer from the UK while mine was being rebuilt - it took the guy 6 weeks last time he did my 3.2 balancer, so I didn't want to wait that long, but in the end he was pretty quick, so I now have a spare XJR harmonic balancer,...if anyone needs one.
It’s all back together and running beautifully. It has lost a slight flat spot it had around 1800-1900 rpm so perhaps that was due to slight chain wear.
anyway, while the radiator was out I took a photo of the 10% larger Powerhouse supercharger drive pulley. It is a very worthwhile modification if you have an XJR. To the right you can see the replacement upgrade Bosch inter cooler water pump.
the power increase with the pulley is noticeable, and it maxes out the airflow meter at about 4-4500 rpm when throttle wide open.
I’m loving it, but sorely tempted by a 2014 XJR with 550bhp that has popped up for sale at a quarter of the new price....
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Last edited by AL NZ; 10-25-2019 at 03:41 AM.
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Don B (10-26-2019)
#3
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when I see some of the cosseted cars that barely get used, I think this is the way to go - enjoying a modern classic on a daily basis and giving a few modern cars some surprises.
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