advice wanted on what to do with my lysholm charger

Jake · August 28, 2009, 01:11:58 PM

Hi all, I bought a lysholm charger with all the bits needed to fit it from PhilJ a while ago and never did aything about fitting it. The current spec of my engine is R1 charger, PSD toothies, GT inlet, 4 branch and exhaust, jabbasport induction kit, G60 injectors and PSD chip. I also have a cosworth front mount ready to go on soon. It ran 150bhp when I had it on the rollers.

My charger has done about 15k since the rebuild, so I'm guessing that will need doing in around 5k miles... which I know will cost me £350.

Now what I want to know is what sort of work would be needed to fit the lysholm so I can get a rough price in my head. I have a chip with it and it comes with 2 different pulleys but I dont wanna fit it if its gonna run silly boost as it'll blow up my standard internals. I never had the map sensor to let you run more boost, but I dunno if this would limit it to a safe amount if I fitted the kit with the standard one.

I'm pretty sure there's not much more power I can get with standard internals, so if I cant and its gonna cost me loads, I'd rather sell the kit.

So could I fit this, and get a custom map to keep it running safe boost and would that be all I needed?

If its just a case of a map then that will probably work out around the same price of a rebuild on the g lader so I may do that for a while. It would be a shame to just sell it without fitting it...

Cheers
Jake

hayesey · August 28, 2009, 02:40:21 PM

it's safe to run more than 150bhp on standard internals, I myself still have a standard bottom end with my turbo installation. It's really, really important that the fuelling is right though.

You can just fit a pulley to the lysholm charger to make it produce whatever boost you want really. As far as I'm aware the main thing about them is that the mounting of them is uber-rigid as even the slightest bit of flex of the charger body and the rotors will lock up and the charger will grenade itself.

Jake · August 28, 2009, 02:53:44 PM

But I dont know what size the pulleys are so I dont know what boost they'd run. Thats why I was hoping the map sensor and a custom map could limit the boost to a safe amount?

g40chris · August 28, 2009, 05:54:45 PM

can you measure the pullies to find out sizes

Jake · August 28, 2009, 06:25:51 PM

would it just work the same as the sizes on the g lader? or would it be different with the different chargers?

hayesey · August 28, 2009, 06:46:23 PM

would be totally different, depends on the size of the charger and the characteristics of how it works. It's going to be trial and error. Put the biggest pulley you have on and see what happens.

You can't control the boost using the map sensor or ecu map, it's determined by the pulley size.

Dan · August 28, 2009, 06:48:26 PM

I would have thought the operating speeds are different and produce boost at difference operating speeds. Can you get a compressor map of it ?

I would imagine it's a fairly big task in getting it mounted properly with the correct bracket, tensioner and alignment.

Jake · August 29, 2009, 12:16:12 PM

When I bought it it came with a bracket. PhilJ had it fitted to one of his for a short time.
OK so basically I need to put it on with the biggest pulley, change the chip, fit the front mount and see how it runs...

And am I right in thinking around 16-17 psi is the maximum boost I want to be running on standard internals?

hayesey · August 29, 2009, 01:18:22 PM

people have run over 20psi on standard internals, it's just a case of getting the fuelling right.

Jake · August 29, 2009, 02:22:48 PM

Ok. Thanks for the help. I may try it after edition 38 and see what happens. The chip I have is for a G60 charger which Phil said was around the same flow rate. Only thing is I wont know how the fueling is. I have an air fuel ratio gauge but I know these aren't very accurate.
I'll try fitting it and take it for a spin. And then just take my time and keep an eye on boost levels.

Cheers for your help!

Jake · August 29, 2009, 05:05:58 PM

Is there anything I can look for to see how the fueling is? Or is it just whether I'm getting black smoke for over fueling, and will I just feel a stuttering under load if its under fueling?

Yoof · August 29, 2009, 07:38:33 PM

Your best off getting a custom map- the g-lader and lysholm have different rpm/boost curves. You'll be risking the bottom end without the correct map.

The lysholm can take alot of rpm though, so big power can be achieved, 190bhp+ can be had on stock internals, as hayesey says, the fueling is critical.

Jake · August 30, 2009, 01:35:40 AM

Yoof, have you got your custom mapping services up and running yet?

Andy · August 30, 2009, 09:58:54 AM

Yes.