T

TallPaulB

Active Member
Unfortunately I don't have £650 to spare, and can't take the risk of converting my transmission into a series of interestingly shaped pieces of scrap, but this caught my eye on ebay yesterday:

https://www.ebay.co.uk/itm/163357904357

Does anyone know anything about these things? Anyone seen one in the wild? From looking at the pictures I think you take the manifold off the top of your engine, replace it with the one included and then the main body of the superhcharger sits under the manifold in the valley.....is that right?

Would this bolt straight on or are there ECU considerations to take into account?
 
Reckon that v8 in the P38 is unreliable enough as it is without heating it up any further!
 
Quick way of stripping it down if you fit one of those to an old tired V8.
 
JE engineering also fitted superchargers to the Thor V8's in the late 90s to the early 2000s

power went from 215hp - 350hp and torque went up drastically..

Of course there were internal upgrades..

The ZF4hp24 is more than capable of handling more power..

But putting excess boost through an old stock v8 probably isn't a good idea ;)
 
TallPaulB said:
Unfortunately I don't have £650 to spare, and can't take the risk of converting my transmission into a series of interestingly shaped pieces of scrap, but this caught my eye on ebay yesterday:

https://www.ebay.co.uk/itm/163357904357

Does anyone know anything about these things? Anyone seen one in the wild? From looking at the pictures I think you take the manifold off the top of your engine, replace it with the one included and then the main body of the superhcharger sits under the manifold in the valley.....is that right?

Would this bolt straight on or are there ECU considerations to take into account?
Click to expand...
Its for a totally different engine ( Jaguar) to what you have in a P38 ( Rover) and wil not fit anyway
 
Moron said:
Its for a totally different engine ( Jaguar) to what you have in a P38 ( Rover) and wil not fit anyway
Click to expand...

It would only need a manifold to fit on the Rover V8t though I think? There's plenty of them about since people apparently bung them in race cars.

Again, I'm not buying one, just looking for more info for when the P38 gets retired from day to day duties and I can play with it :)

Good spot though, I misread the title as Rover V8 supercharger :D
 
Supercharging a p38 onto the inlet isnt a good idea, te airflow out the supercharged is mainly inducted by the front 4 cup with the rear 4 starved and running rich. the forced air needs to be dispersed equally which would require inlet distribution which would result in a big hole in the bonnet
 
There's a few people in a thread on 'another site' with supercharged P38s who say they run fine and the starved cylinder thing is a rumour put around by a certain company who sell expensive blocks / cylinder heads as an alternative to supercharging.

No idea if that's true, but does anyone have direct experience or is everyone just repeating the starved cylinder thing from the same source?

Here's one for example:
mqV4xjc.jpg
 
Last edited:
Surely, the inlet tract is designed to allow equal ammounts of air available to each cylinder. The supercharger merely pressurises that air supply
 
While its a nice idea, I'm not sure that trying to make a vehicle that has all the aerodynamic properties of two house-bricks in mating formation "more nippy" is really a viable proposition.
Something has to give. The ruddy thing is over 2 metric Tonnes. Its quick enough for me as it is. :D
 
The L322 weighs more than the P38 and the supercharged version of that is fairly nippy. Not saying you could get the venerable Rover V8 to that level of performance without throwing stupid money at it, but I bet you could get better than stock with a bit of money :)
 
Also is the breaking system the same on the super charged l322 as the p38 or updated
 
pete12345 said:
Also is the breaking system the same on the super charged l322 as the p38 or updated
Click to expand...

Many, (inc. insurance companies) will doubtless disagree with me but I'm not sure that this emphasis on upgrading brakes is wholly justified. Just because an owner seeks an improvement in power/torque doesn't mean they are going to drive the vehicle any faster or less safely. If the vehicle has an efficient system to start with …
I've had motors running all-round drum brakes that, properly adjusted, would stop the thing on a sixpence.
 
TallPaulB said:
There's a few people in a thread on 'another site' with supercharged P38s who say they run fine and the starved cylinder thing is a rumour put around by a certain company who sell expensive blocks / cylinder heads as an alternative to supercharging.

No idea if that's true, but does anyone have direct experience or is everyone just repeating the starved cylinder thing from the same source?

Here's one for example:
mqV4xjc.jpg
Click to expand...

that's the way to go. forced induction through the OEM intake will give the even distribution of forced induction. its when the supercharger goes on top of the inlet manifold there are problems as I understand. would love to have my P38 blown
 
norseman said:
Many, (inc. insurance companies) will doubtless disagree with me but I'm not sure that this emphasis on upgrading brakes is wholly justified. Just because an owner seeks an improvement in power/torque doesn't mean they are going to drive the vehicle any faster or less safely. If the vehicle has an efficient system to start with …
I've had motors running all-round drum brakes that, properly adjusted, would stop the thing on a sixpence.
Click to expand...


fair point.

upgraded brakes are going to be required if you are track daying the car. but a P38. on the road you still have the same speed limits modified or un modified. the P38 is never going to be dragster, but tweaks and tuning will make it run more efficiently for the performance and of course supercharging comes into its own at higher altitudes. factory tuning and cams are designed to give a wide band of performance as they go to many different regions cold, hot, high, low, so the manufacturer bases the widest use possible.
 
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