Page 1 of 1

Piper Cross Filter and Restrictor Washers.

Posted: Tue May 10, 2016 2:30 pm
by dave9118
I'm in the process of selling my 400 L2 (don't panic, just bought another 750 J2) and the lad that's buying it has just passed his test. I acquired a set of 15.5mm washers from ebay for about £2 and I'm throwing those in with the sale. At the moment its got a Piper Cross air filter in it and standard jetting, so its running way too lean and popping and farting mid range, which I intend to cure by replacing with a stock filter... BUT, will the lad be better off with the Piper Cross seeing as he's about to restrict the air intakes with washers??

Just curious...

Thanks

Re: Piper Cross Filter and Restrictor Washers.

Posted: Tue May 10, 2016 3:08 pm
by Miles
In theory if your restricting the air intake then your want as much air flow as possible.

Try fitting the washers and take it for a spin. Then try the stock filter.

That or some dyno time

Re: Piper Cross Filter and Restrictor Washers.

Posted: Tue May 10, 2016 3:16 pm
by dave9118
Yeah, I agree with the theory but you know how these things go!! If the buyer wants it dyno'd he can do that himself.