hoss1720 Posted June 29, 2011 Share Posted June 29, 2011 Got a 110 V8 1987 which has been converted to run on LPG On either side of the engine,attatached to the heads are these 2 units. the units have 3 pipes converging into a square metal box which once appeared to have a hose on the end which has now been removed. the end where the hose were attached have been crimped.They do appear to be drawing air into the engine. I want to know what they are and can i remove or re-instate them Quote Link to comment Share on other sites More sharing options...
western Posted June 29, 2011 Share Posted June 29, 2011 RTC6330 is a superseded water pump click here see item 5 on page 279 looks like the item you have described Quote Link to comment Share on other sites More sharing options...
hoss1720 Posted June 29, 2011 Author Share Posted June 29, 2011 Your right it is item 5 on page 279,a pulsair box.What does it do? neither side is connected to anything?Can i remove them completely or not? Quote Link to comment Share on other sites More sharing options...
western Posted June 29, 2011 Share Posted June 29, 2011 Part of the air intake system IIRC, don't know exactly what they are meant to do, simply because I've never had a V8 110. Quote Link to comment Share on other sites More sharing options...
hoss1720 Posted June 29, 2011 Author Share Posted June 29, 2011 Just done a google search and found that it was introduced to try and reduce emissions on the vehicle for the American market.Air is drawn into the exhaust manifold via these units.Apparantley a blanking plug is availablemany thanks for the reponse Quote Link to comment Share on other sites More sharing options...
western Posted June 30, 2011 Share Posted June 30, 2011 glad you found so more good info, sorry I couldn't help further. Quote Link to comment Share on other sites More sharing options...
Tanuki Posted June 30, 2011 Share Posted June 30, 2011 That's the old 'Pulsair' system - dating from a time-before-catalytic-convertors. Basically, it allows negative-pressure pulses in the exhaust-manifold to suck in air via the pipework and box: this additional air then reacts with any unburned fuel in the exhaust-downpipes to reduce Hydrocarbon- and Carbon-Monoxide emissions. (Some US-spec vehicles also had an engine-driven air-pump to aid the process). Feel free to remove the pipework and fit appropriate blanking-plugs to the resulting holes. --Tanuki. Today's forecast is: moderate to heavy patches of Frogs and a sunny outlook, but with a belt of inflatable pink Lizards moving in from the west as the weekend comes to an end, followed by a visit to the psychiatrist for some better drugs sometime Tuesday" Quote Link to comment Share on other sites More sharing options...
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