Justin Posted July 18, 2004 Share Posted July 18, 2004 It says so in here. Why is it better? http://www.mkiv.com/techarticles/fuel_pumps_test_2/index.html Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 No different, just orientation of fuel outlet and electrical connectors. Had a thread posted in the Vortex section but it seems to have been deleted??? Mods? I'll find a link to the info elsewhere and post it up tomoz or pm you it mate. I believe for jap Supra you want the 342 and I think you can fit the 341 if you have a uk spec. Depends on layout of fuel pump hanger in the tank. Dan Quote Link to comment Share on other sites More sharing options...
Jake Posted July 18, 2004 Share Posted July 18, 2004 Originally posted by dandan No different, just orientation of fuel outlet and electrical connectors. Don't think so mate. I've just fitted a GSS342 and it was a straight swap. I've seen Terry S saying the 341 was the prefered choice but PaulE supplied me with a 342 and assured me it would be fine, and it has been so far :shrugs: Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 I don't get your point Jake? I know the 342 is a straight swap. Have you tried fitting a 341 though? Quote Link to comment Share on other sites More sharing options...
Jake Posted July 18, 2004 Share Posted July 18, 2004 You edited your post and added a bunch more info compared to the post I was replying to. Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 Added yes, not changed anything though. (Before I read your post in case you were wondering) The orientation of elec/fuel connections is different between 341 and 342. No difference if flowrate or pressure. Quote Link to comment Share on other sites More sharing options...
Jake Posted July 18, 2004 Share Posted July 18, 2004 I dunno. In this thread Terry S said :The 341 is the one suitable for the Supra as it has a static pressure of 38.5 psi. The 342 is for EVO's etc with a pressure of 43.5 psi. That's completly different to what you're saying, isn't it? Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 I see where you are coming from, with the info Terry posted. I personally don't think that is quite right though. People seem to have gotten a bit confused over the Walbro pumps lately. The 341 and 342 are both totally suitable for the Supra with regards to flowrate and pressure. As long as the flowrate supplied by the pump is sufficient to generate pressure in the system greater than the fpr setting then the fpr is what controls the rail pressure. (- Assuming it has the flow capacity to do so but in this case we can certainly assume it does.) The 341 will not sit correctly in a facelift jap car pump hanger and I think that is the case for all jap cars. 342 is the one for a Jap car. 341 attached: Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 342: These pics at least help show the physical differences between the 2 pumps. Quote Link to comment Share on other sites More sharing options...
Jake Posted July 18, 2004 Share Posted July 18, 2004 I see now, thanks for clearing that up, DanDan. So were you the guy that got sent the wrong one in that Vortex thread? Quote Link to comment Share on other sites More sharing options...
dandan Posted July 18, 2004 Share Posted July 18, 2004 All sorted though, no problems. Quote Link to comment Share on other sites More sharing options...
Miguel Posted July 18, 2004 Share Posted July 18, 2004 hands up, lesson learnt:innocent: Quote Link to comment Share on other sites More sharing options...
Barry Posted July 19, 2004 Share Posted July 19, 2004 I must get round to fitting mine, I keep putting it off! Knowing my luck I'll fit it this week and run into trouble and not be able to drive up to JAE!! Moved the RLTC control yesterday too, looks well smart and very descrete, but easily accessable. Will post up some pics this evening. Now just need to make a nice mount up to fit the SAFC in the lower din space. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 11, 2004 Share Posted August 11, 2004 the reason the 341 is prefered is it was AFAIK designed with the same static pressure as the Supra, where as the 342 has a slightly higher static. You can fit either to a JDM I have done it. The 342 is easier to fit as Dan says. Both flow the same amounts. If you had a UK the 341 is the ideal choice. Quote Link to comment Share on other sites More sharing options...
Vaughany Posted August 11, 2004 Share Posted August 11, 2004 Terry Can you clear this up for me, I purchased a Walbro 341 Pump from Envy for my Jspec TT. I did'nt fit it but a mechanidc did, all he did was replace the old pump with the new and a bit of soldering a I think and it fitted fine. I have had no problems with it that I am aware of and has been on the Soop for a few months. Being a J-spec, would it of been better to have the 342 instead of the 341? Cheers Quote Link to comment Share on other sites More sharing options...
dandan Posted August 11, 2004 Share Posted August 11, 2004 If it's in now I wouldn't worry. I just wasn't happy with the way the 341 hung in the pump bracket, obviously some people don't seem to mind. Functionally, as long as it's in and it's secure and the wiring and fuel pipe routing is all good then no problems. Quote Link to comment Share on other sites More sharing options...
Vaughany Posted August 12, 2004 Share Posted August 12, 2004 Cheers dandan Thats a relief as I have had an ICE install done since fitting the fuel pump. I did'nt fancy removing this unless I really had to. I am surprised though that some traders are supplying the 341 for J-Specs if the 342 is would be a better option. thanks again, you have saved me a job and a headache. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 12, 2004 Share Posted August 12, 2004 Vaughany we aren't Envy should have learnt from ours and Dan experience. For DIY fitment we supply 342's for JDM cars. Quote Link to comment Share on other sites More sharing options...
Vaughany Posted August 12, 2004 Share Posted August 12, 2004 Terry The fitting of my 341 has already been done, am I likely to experience any problems if a 341 is fitted instead of the 342. The flowrate etc is the same I believe so once fitted as long as it is secure would I be correct in saying that I should'nt experience any problems. I would hope that Envy will get on this post and explain why they are sending out 341 for J-Specs when they should be sending out the 342. thanks Quote Link to comment Share on other sites More sharing options...
hadyn Posted February 21, 2005 Share Posted February 21, 2005 has anyone else heard of 342s failing as mentioned in this thread? http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB9&Number=67894045&page=0&view=collapsed&sb=5&o=&fpart=1 Quote Link to comment Share on other sites More sharing options...
Dragonball Posted February 21, 2005 Share Posted February 21, 2005 has anyone else heard of 342s failing as mentioned in this thread? http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB9&Number=67894045&page=0&view=collapsed&sb=5&o=&fpart=1 No m8 - I have provided loads of 342's and they have always appeared to be highly reliable Of course things will go wrong - that happens - but I dont think you should be that worried. Quote Link to comment Share on other sites More sharing options...
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