J tubes or heat exchangers?

[AxlFoley]

I have been debating the removal of my heat exchangers and replacing them with J tubes, I remember back in my Beetle days someone telling me that J tubes can add 5BHP, is this true ? if so how exactly is this achived?

Thanks

Mark

 

[aogrady]

Hi!

If you have a stock engine, i would leave it with heat, but a tuned/performance engine may well work better with a little free-er flowing exhaust system?

Personally, i love the heat, so keeping mine stock. You may well find you could gain a few bhp by giving everything a good right good check over, valve clearance, timing, dizzy operation, and mixture, and throttle adjustment, check brakes are not binding etc

Quite probably a change of exhaust system from stock would liberate a few horses, and still keep the heat all nice and toasty needed now the autumn is upon us!

You can get large bore H.E, but think they are pricey, as you need the large bore systems too?

Cheers!

Alistair

 

[AxlFoley]

yeah I think you are right, i cant really see any bennifit from fitting J tubes, especialy as you will end up having gaps in the tinware, where the heat exchanger would normaly fill.

I know for a fact that one of mine is guenuine too, so I think i'll stick with them.

Thanks

Mark