Overrun

[Enfield 0]

Hi there,

 

Fitted a different backbox to my rallye which has a tailpipe of approx 3" in diameter and it's incredibly loud because I have no centre silencer or CAT but i'm kind of used to it now.

 

Basically I just want to know how to stop the constant popping noises when I come off the throttle...and I really do mean constant!

 

I would put the standard exhaust back on but I sold it and to be honest, I don't really want to spend any more money on the car as I'm planning to get shot of it sometime soon.

 

Thanks!

[Sandy 191]

Dip the clutch?

 

Or increase the idle mixture setting sometimes tames it a bit.

[johnnyboy666 195 1 Cars]

when mine was doing that constantly i found it was running very rich because the main jet in the carb had vibrated itself slightly loose, its worth having a check just to be sure

[Enfield 0]

when mine was doing that constantly i found it was running very rich because the main jet in the carb had vibrated itself slightly loose, its worth having a check just to be sure

 

It still does it when it's running lean, at the moment it's fine mixture wise and the jet is definitely in nice and tight because I removed it to clean it the other day.

 

My dad keeps telling me it's to do with timing...

[Casanova 0]

Probably just the lack of back pressure tbh. My old TU9 Junior did it when I badly holed my downpipe and then stopped again when I replaced it.

 

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[johnnyboy666 195 1 Cars]

best to get the timing checked then methinks, theres a guide on how to do it on here somewhere

[Enfield 0]

Standard box is back on, but it still pops but not quite as much, sounds quite nice actually