Nitrous backfire

Jul 24, 2005 11 Replies

Looks like a slight backfire into the intake manifold.

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This one's kinda cool as well :)

and for those that want to keep it for their collection

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and again to save it

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I was looking for Burgerman. ; )

Fraser

Well I am here!

Nitrous backfires are caused by US style kits having the fuel jets at the end of the line rather than at the solenoid outlet. If the fuel sat in the pipe after the solenoid gets hot as it will in heavy metal or braided lines in the engine bay, then the fuel vaporises. When you hit the nitrous button the fuel flows slowly along the pipe because it first has to push all the air out of a oversized pipe through the small fuel jet. So you are feeding just nitrous without fuel for a second. This weak engine mixture causes it to flash back in the intake just as the fuel arives! An excellent crappy design coppied from NOS original setup by every other company. My, and Highpower systems seldom have this prop because fuel is metered rather than air, directly at the fuel solenoid outlet, and the pipe is small bore nylon (low thermal mass, low volume, no restrictive jet at the end.

In news:42e40be9$0$24496$ snipped-for-privacy@ptn-nntp-reader03.plus.net, Homer decided to enlighten our sheltered souls with a rant as follows

This looks like fun

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-- Pete M

Range Rover Vogue SE, Ford Capri (ressurection stalling) Porsche 911 3.2 (For Sale)

COSOC #5 Scouse Git extraordinaire. Liverpool, Great Britain

and for those that want to keep the movie

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I was doing about 50mph when something similar happened to mine.

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