gfiandy Posted January 12, 2015 Share Posted January 12, 2015 I have now tried three mechanical fuel pump suppliers, James Paddock, SC Supplies and QH from EBay. All of these suppliers sent the same pump which pushes far to hard on the cam and has ruined it. I have now spent the best part £100 £17, £45 and £25 respectively and still don't have a pump I am happy to fit to the car. The QH part is the closest to OK but it still has a really rough lever and is 5mm tighter on the cam than the original pump.Does anyone know where you can get a good mechanical fuel pump for a MK3 spitfire?Thanks,Andrew Quote Link to comment Share on other sites More sharing options...
nang Posted January 13, 2015 Share Posted January 13, 2015 The last one I got (about 4 years ago) was from Rimmers. Worked Ok.I have a feeling they all come from the same manufacturer, alternative is an electric pump.Tony. Quote Link to comment Share on other sites More sharing options...
Slimboyfat Posted January 13, 2015 Share Posted January 13, 2015 2674 wrote: and is 5mm tighter on the cam than the original pump.Thanks,AndrewLater spacer type? Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted January 13, 2015 Share Posted January 13, 2015 I got "tkc3417 fuel pump spacer block type 1500 late" from James Paddock last year and it looked pretty similar to the pump I had fitted.I swapped them over before the RBRR so that the old known good pump was in reserve.You've got me wondering now if I need to remove the new pump and check for cam wear. Quote Link to comment Share on other sites More sharing options...
Slimboyfat Posted January 13, 2015 Share Posted January 13, 2015 Correct number for a Spitfire MKIII is 208493. Quote Link to comment Share on other sites More sharing options...
Slimboyfat Posted January 13, 2015 Share Posted January 13, 2015 Correct number for a MKIV (and early 1500 pre spacer) is RKC1624. Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted January 13, 2015 Share Posted January 13, 2015 Sorry for some reason my tiny brain missed the fact that we were talking about a mk III.DOH! Quote Link to comment Share on other sites More sharing options...
Deleted User Posted January 13, 2015 Share Posted January 13, 2015 bin it blank it and fit an 12v unit and forgetRob Quote Link to comment Share on other sites More sharing options...
Velocita Rosso Posted January 13, 2015 Share Posted January 13, 2015 bobyspit wrote:bin it blank it and fit an 12v unit and forgetRobHappy New Hog Man....Eh!....but you also have to get the right oneP has had a couple which were naff....the third one is now OK Quote Link to comment Share on other sites More sharing options...
don cook1 Posted January 13, 2015 Share Posted January 13, 2015 I have a Huco to fit to my GT6. I'm mounting it on the bulkhead somewhere using a couple of Mini exhaust bobbins. Quote Link to comment Share on other sites More sharing options...
gfiandy Posted January 13, 2015 Author Share Posted January 13, 2015 I have purchase the right part it has the olives and nuts to fit copper pipes and I checked several times that I had the right part number. They are just really badly designed and incorrect tolerance. I do not want to change to a electric pump unless I absolutely have to the MK3 is mostly original and i would like to keep it that way as far as possible.Below is a link to what these pumps have done to the cam in only about 1000 miles. (I fitted the James Paddoc and SC spares ones one after another since the SC spares one was so much more expensive I hopes it was better but it wasnt) I haven't fitted the QH one as it doesn't seem to be any better. The engine was apart for other reasons which is how I spotted this although even when fitting them I thought they felt to stiff on the cam so was suspicious, hence buying the more expensive version.What I am looking for is one of the pumps that has the lever arm formed out of a piece of metal such that the surface touching the cam is smooth and beveled (this what the old one looked like) not roughly punched out of a flat piece of steel or a service kit for the older style pump as I still have it.90 Quote Link to comment Share on other sites More sharing options...
nang Posted January 14, 2015 Share Posted January 14, 2015 Is it possible to use the old lever and fit it to your new pump ?Tony. Quote Link to comment Share on other sites More sharing options...
daedalusminos Posted January 14, 2015 Share Posted January 14, 2015 What's wrong with your original pump? Will a recon kit not suffice? Quote Link to comment Share on other sites More sharing options...
Deleted User Posted January 14, 2015 Share Posted January 14, 2015 I fitted a Facet redtop 12v fuel pump on my 1300 and 8 years on its supplying my swirl pot with fuel no issues. Reliability and increased performance less bits to go wrong (mechanical fuel pump has lots of parts that do go wrong) If you insist on keeping the mechanical pump you may have to have the camshaft re ground on that damaged area.Good luck RobMike Happy new year mate hope all is well Quote Link to comment Share on other sites More sharing options...
mjwman Posted January 15, 2015 Share Posted January 15, 2015 I may have missed it but if that is happening should you not be using the spacer with that pump?My original (1500) used a spacer but it was obvious that the new one from Paddocks did not require it and it has been fine for years. Seeing as there are two types mabe you just need to space it a bit. Quote Link to comment Share on other sites More sharing options...
npanne Posted January 15, 2015 Share Posted January 15, 2015 I've had problems with the six-cylinder mechanical fuel pumps - namely that they leaks terribly. I suspect that an electric alternative is on the cards as, like the OP, I've thrown far too much money at units that aren't fit for purpose.Is Facet the way to go? And is there a flow rate that I should be aiming for? Quote Link to comment Share on other sites More sharing options...
Paudman Posted January 15, 2015 Share Posted January 15, 2015 I presume you mean you’ve had more than one causing problems? If they leak, from where? I’ve never had one leak but I use the AC glass-dome versions on my GT6.Find a good glass-top one and replace the valves and seals; should give years of life after that. Chic Doig used to have the refurbishment kit including the brass filter and rubber seals. Quote Link to comment Share on other sites More sharing options...
RobPearce Posted January 15, 2015 Share Posted January 15, 2015 I agree with Paudman on the glass dome - never had a leak on the Vitesse (I did rebuild it due to a sticky valve once) but the GT6 with the later type is less-than-wonderful.As to the Facet pumps - they're basically all rated high enough for a standard GT6. They tend to quote target BHP figures as that's a better indicator of fuel flow than engine size. At least, where I last looked they did, but it was a "motorsport" catalogue :) Quote Link to comment Share on other sites More sharing options...
npanne Posted January 15, 2015 Share Posted January 15, 2015 Thanks - if I can find a glass-topped pump I'll go with that, otherwise a facet one at some point.The ones I've had have all leaked from the top - the brass coloured cap, and also where the top and bottom halves join too. I don't mean a gentle seep, I mean pouring out - and it's been three in a row - the trouble is that each time there's been months between purchase and fitting, so I don't feel that I can return them. Maybe I've just been unlucky, but I'm not throwing any more cash at those types. Quote Link to comment Share on other sites More sharing options...
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