Dave C Posted April 16, 2017 Report Share Posted April 16, 2017 My GT6 has a 2.5 PI engine and a 123 programmable distributor. I'd like to find a rolling road service with experience and expertise of Lucas PI, within travelling distance of Oxfordshire. I've found Lynx AE (rollingroadtuning.co.uk) in Wellingborough, Northants. Does anyone have experience of them? Or any other recommendation?............ Link to comment Share on other sites More sharing options...
GT6M Posted April 16, 2017 Report Share Posted April 16, 2017 Problemo ye got is the PI v v few will no how to do any thing wid it. And, best thing ye can doo befoer ye even contemplate going to a RR is to get a PSI gauge plumbed into yer system either an electric one int car,or a mech one just int feed pipe to MU this cos if yer pump aint giving 100+ PSi at WOT and high revs then yer RR time will be total waste of time / money as if its running weak, then there is no way it can be tuned at top end,or after 4.5 and WOT NOTE, just cos a gauge reads 100 + at idle, or IGN on dont mean it,ll be showing this at WOT an revs yer injectors open at 55-60 PSI ,BEFOER any fuel gets into manifolds so if pressure is down, its no gonna let much fuel in, as ijectors wont be open long enough,or squirt enough when open. So, ask the RR folk if they no how to alter fuel settings for flow at WOT and also other RPM ranges alter one ring, and it alters other rings with it And,if ye got a dirty,or restricted air filter, this will mek yer engine run WEAK, not rich its back t,frunt as to carbs wid PI, !!! M Link to comment Share on other sites More sharing options...
JohnD Posted April 16, 2017 Report Share Posted April 16, 2017 No argument with Marcus But because Lucas Pi is wholly mechanical, it can be set up on the bench, but you need the correct rig to do it. The usual suspects have those rigs, and if you tell them your engine spec and how you will use it, they can 'tune' the M/u. No need of a Rolling Road! And for the same reason, and unlike Carbs, there is neither need nor benefit from fiddling with it thereafter. Lucas PI is, despite its reputation, completely and long lastingly reliable. It was untutored mechanics, Sir John Black was too mean to offer them training, even though it was the first petrol injector system anyone had seen, fiddling that got Pi that reputation. John Link to comment Share on other sites More sharing options...
Dave C Posted April 17, 2017 Author Report Share Posted April 17, 2017 Thanks, in view of both your advice I'll approach it in a different way.... I'll start by setting the distributor up and adjusting on the road. Link to comment Share on other sites More sharing options...
GT6M Posted April 17, 2017 Report Share Posted April 17, 2017 Unless ye got a fuel pressure gaugeplumbed in its a waste of time, as fuel mix will effect spark timing. get a pressure gauge plumbed in on a T bit, wid a long enough pipe t,reach into cabin IF yer PSI is reading 100+ at wotan revs, then proceed Its got t,be a v v good pump t,keep PSI up at WOT an revs only 2 I no off, an I bet ye aint got either !!! if it aint,then forget aboot owt else. honestly, forget aboot it, ye be wasting yer time an LooT been there fun oot,passing on hard earned info M Link to comment Share on other sites More sharing options...
Dave C Posted April 18, 2017 Author Report Share Posted April 18, 2017 Yes, what I mean is I've decided against the Rolling Road. I'm just going to set an ignition timing curve in the 123 Distributor and see how i get on........ Link to comment Share on other sites More sharing options...
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