Originally Posted by Meekey Mouse
Hey Hoygard, A well known forum loon has been commenting eleswhere that you've melted a couple of pistons whilst developing your supercharged 156. I find that to be unfair and would like to hear what you've got to say. Blatent **** stirring I know but....
It's no secret that the engine suffered three burnt pistons, looky here;
He's insinuated that this was through the use of inferior quality products and poor engineering expertise
Well, It ran fine for a year, including two trips to Holland going on hour after hour in excess of 100 Mph on the Autobahn. The reason it blew up was that I upped the boost pressure by mounting a smaller pulley to the charger. I was fidling with timing and fuelling at the time it blew up. I was trying to calibrate it roughly, before splashing out on a rolling road session.
For instance, its not like a stociometic mixture is critical to the running of an engine is it? And its not even that difficult to program an ecu to provide said mixture now is it?
Most cars run lean these days, that's what JTS engines is all about. When catalytic converters were something new, the automakers strived to make them run Lambda=1 (14,7:1 air/fuel ratio) most of the time except when on full load. Today cars run a lean mixture at normal cruising speeds.
Originally Posted by Urban
I just want to say that I don't think Hoygaard did his project to prove anything to anyone (nor to show off, like some people did), he did it because he wanted. And nobody has the right to criticize him or his options.
AD had every right to critisize me, I did after all critize his choises on a few occasions. What I don't think he ever understood was what I tried to achieve. It was'nt a big HP monster with airscoops every where. What I wanted was more torque, and a few extra ponies were a a nice bonus. Also my conversion was hardly road legal in Denmark, which meant that;
A. It should look fairly factory made, no flashy crome stuff. Hence side
mounted intercooler (AD really does hate them
B. It should be easily removeable, come MOT time.
In fact, I may add that I admired his work, because HE did it, not his mechanic! And I understand his options because he, like most people around here, didn't want to spend 40000£ in his car!
To be honest, I used to be a mechanic
PS: Hoygaard: in opposite to ADs ££££££ project, that has about a bezzilion posts here, there's not a detailed topic in AO about your supercharger's project. I'd really like to know more about it, and try to identify if with forged pistons the project would have succeeded... If you don't mind!
That won't happen, I think these will be my final words on the subject.
Forged pistons would have helped, but running my initial low boost of 0,3 bar, I don't think it will be necessary (Novitec just grinds a bit of the factory pistons for their 200 BHP turbo conversion). If you have a standard Gearbox, and not a Selespeed I myself would have chosen to replace the ECU with a programmable one. I had to use the standard ECU and a mappable piggyback ECU because the Selespeed system is retriving a great deal of information from the ECU via a CAN-bus system.