mark davies Posted November 19, 2013 Share Posted November 19, 2013 hicould someone please steer me in the right direction wiring up fuel pumpmy battery is already in the booti am no electrican but this is the way i see iti was going to use another fuse block in the boot run one wire to front fuse box the other to batteryconnect pump to rear fuse blokeif this would work which wier should go the front and which to batteryand on the front fuse box where woul i get power only when ignition is onthanks Quote Link to comment Share on other sites More sharing options...
piman Posted November 19, 2013 Share Posted November 19, 2013 Hello Mark, the P.I. pump when Triumph built the cars originally was fed through a safety switch (inertia) so in the event of an accident the pump will be switched off. Such a switch should be installed but use a relay to power the pump. The inertia switch should be connected to an ignition fed source, which then supplies the coil side of the relay. All this can be in a light section wire, Feed the power side of the relay from the battery via a fuse with a medium section wire and like wise from the power side of the relay to the pump.Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted November 20, 2013 Author Share Posted November 20, 2013 having no pictures of pump placement im guessing this is right. Quote Link to comment Share on other sites More sharing options...
piman Posted November 20, 2013 Share Posted November 20, 2013 Hello Mark, yes that's about it. Is the car originally a P.I. , if so it should also have the safety switch on the left hand side of the bulkhead? It's a white cylindrical plastic device with a button top.If it was not originally a P.I., ideally you need to source a P.I. petrol tank as it is slightly different.Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted November 20, 2013 Author Share Posted November 20, 2013 petrol tank already fitted i presume that i can use regular fuel line between tank and filter and filter to pumpj took the injectors out 5 screw type 1 push in and one of them rattlesi strip a spare metering unit just to see how it works what servicable parts can be fitted with out disturbing settingsthanks for advice Quote Link to comment Share on other sites More sharing options...
piman Posted November 21, 2013 Share Posted November 21, 2013 Hello Mark, yes, there's only the tank pressure between the filter and pump so not pressure to worry about. Did you notice that on the pump there is a small metal pipe, this is a tell tale to let you know if the pump seal is passing and should have a small length of plastic pipe through a hole in the boot floor, so any petrol leak is drained out of the car, and as I say is a tell tale of a failed seal.Alec Quote Link to comment Share on other sites More sharing options...
thescrapman Posted November 21, 2013 Share Posted November 21, 2013 MarkYou can easily fit a new set of seals to a metering unit without disturbing any settings.You just need to take your time as some are fiddley to fit.But I would get it running on the existing metering unit then see if it needs resealing.CheersColin Quote Link to comment Share on other sites More sharing options...
mark davies Posted November 21, 2013 Author Share Posted November 21, 2013 thankswill send spare metering unit away for rebuild when i stripped down metering unit that i had lying under the bench for 10 years the seals look good so im hoping seals on engine metering unit okits going to trial and error im collecting bosch parts as well iv got a decent s bottom end tr5 cam pi heads which i might put in other car at some stagemark Quote Link to comment Share on other sites More sharing options...
piman Posted November 22, 2013 Share Posted November 22, 2013 Hello Mark,"im collecting bosch parts as well"You won't need them, the Lucas pump in good condition and fed with decent wiring works fine. You won't even need the cooling coil on your pump that's in your picture.Alec Quote Link to comment Share on other sites More sharing options...
CRAJ Posted November 22, 2013 Share Posted November 22, 2013 I agree with Alec totally, the heat build up in the Lucas pumps is as much to do with a poor supply to the pump as anything else. Under voltage heats the pump up.I have never had problems on my pi because of the Lucas pump.Colin Quote Link to comment Share on other sites More sharing options...
Englishbull Posted November 22, 2013 Share Posted November 22, 2013 CRAJ wrote:I agree with Alec totally, the heat build up in the Lucas pumps is as much to do with a poor supply to the pump as anything else. Under voltage heats the pump up.I have never had problems on my pi because of the Lucas pump.ColinFamous last words........................................esp after chat this morning and RBRR :X Quote Link to comment Share on other sites More sharing options...
CRAJ Posted November 22, 2013 Share Posted November 22, 2013 I will have a spare one on board in October, Lucas of course, just incase. ;)Also although it wasn't part of the original question on the thread, don't forget to put a stop tap in the feed to the filter from the tank, it makes changing the element and any subsequent pump maintenance so much easier.Colin Quote Link to comment Share on other sites More sharing options...
piman Posted November 22, 2013 Share Posted November 22, 2013 Hello Lee,when I built my car, many moons ago, and with little P.I. experience at the time I decided to fit a service and stand by pump in view of the horror stories I heard at the time. All it has proved is that it wasn't necessary.Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted November 22, 2013 Author Share Posted November 22, 2013 iv wired up the pump run through bulkhead to fuse box when i refitt the engine ill get a auto electrician to button everything upone question on fuel tank filler ther is a small gooseneck pipe is it breather or returnthanks Quote Link to comment Share on other sites More sharing options...
piman Posted November 23, 2013 Share Posted November 23, 2013 Hello Mark, don't forget the relay and feed it from your battery, being in the boot, it will give a nice short run. The goose neck on the tank is the return from the metering unit. I.e., you have a fuel line from the pump to the metering unit and a fuel line from the metering unit to the tank.Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted November 23, 2013 Author Share Posted November 23, 2013 thanks aleciv got new fuel line but first need to fix slop in bottom end of engineif i post pic of bottom end please commentwashers in sump one bent like bannanabig end down to copper but more of concern is big groove in the cap both are standard size so never been touchedanyway iv ordered standard bearings and oversize thrustshould i have groove welded and machinedthanksmark Quote Link to comment Share on other sites More sharing options...
piman Posted November 23, 2013 Share Posted November 23, 2013 Hello Mark, "but more of concern is big groove in the cap "that sounds unusual, can you put a picture up?Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 2, 2013 Author Share Posted December 2, 2013 hello againi think the pi motor i have is pretty tiredwhat i do have is the motor that was rebuilt about 10 klm ago i have half a dozen heads and from what i understand 3119 308351 is pi headim sure iv got a pi camso i should be able to mix and match that lot togethrtthe good thing is the s motor already has the air con pulley on itpost pics laterthanksmark Quote Link to comment Share on other sites More sharing options...
JimEB Posted December 2, 2013 Share Posted December 2, 2013 Hi Mark,This should answer most of your queries concerning heads...http://www.chriswitor.com/cw_technical/head_applications_chart.pdfCheers! :) Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 3, 2013 Author Share Posted December 3, 2013 Photos Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 3, 2013 Author Share Posted December 3, 2013 Photos Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 3, 2013 Author Share Posted December 3, 2013 . Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 3, 2013 Author Share Posted December 3, 2013 . Quote Link to comment Share on other sites More sharing options...
piman Posted December 3, 2013 Share Posted December 3, 2013 Hello Mark, you mentioned a big groove in the cap but the cap in the picture looks normal. The shell has a groove but that is how it's made.Alec Quote Link to comment Share on other sites More sharing options...
mark davies Posted December 3, 2013 Author Share Posted December 3, 2013 hi alec i should have laid it on its side i reckon its about 1/8 inch deep been rubbing against the blockill put engine on stand next week and inspect blockmark Quote Link to comment Share on other sites More sharing options...
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