bjc Donating Members 2,823 Member For: 21y 3m 23d Gender: Male Location: Townsville Posted 29/04/21 09:33 AM Share Posted 29/04/21 09:33 AM Hope it's an easy diagnosis then. If you do the return then you know it's done but I'm hearing you about the fuel tank. I still haven't dropped mine for the first time and I'm dreading it... Still unsure of what I want my end goal to be which will likely end up bigger than planned as always!I don't have the cash for a built engine or the man power to do it these days anyway, that's why your build and others is good for me. Almost like I'm along for the ride plus I gain some knowledge to... Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,990 Member For: 9y 10m 27d Gender: Male Location: South Australia Posted 29/04/21 09:37 AM Author Share Posted 29/04/21 09:37 AM Well I just did the test I said I was going to do and the fuel pressure dropped. I set it back to 4 bar as I had been fiddling with it and it was slightly under. That means the restriction is after the quick connect, towards the tank. Now it's beer time 1 Link to comment Share on other sites More sharing options...
boakesautomarine Member 49 Member For: 4y 9m 15d Posted 29/04/21 09:55 AM Share Posted 29/04/21 09:55 AM Hey dude check the hoses in the tank mine split Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,990 Member For: 9y 10m 27d Gender: Male Location: South Australia Posted 29/04/21 10:10 AM Author Share Posted 29/04/21 10:10 AM The fuel pressure is too high so this points to a return restriction. If the filter was blocked or the hoses were split it would restrict supply Fwiw I used proper expensive ass intank fuel hose rated for all the pressure, when I installed the pumps. Link to comment Share on other sites More sharing options...
adams355 Member 529 Member For: 7y 7m 25d Gender: Male Location: Brisbane Posted 29/04/21 10:52 AM Share Posted 29/04/21 10:52 AM I was thinking of modding a fuel mat into mine and taking the Venturi piece out 2 Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,990 Member For: 9y 10m 27d Gender: Male Location: South Australia Posted 29/04/21 11:28 AM Author Share Posted 29/04/21 11:28 AM The Territory and Falcon tanks are very different, the Falcon tanks suck balls basically. A Falcon tank would definitely benefit from a fuel mat, though come to think of it, it would work well in a Territory too. Link to comment Share on other sites More sharing options...
bjc Donating Members 2,823 Member For: 21y 3m 23d Gender: Male Location: Townsville Posted 29/04/21 05:11 PM Share Posted 29/04/21 05:11 PM Yes you told me about the mat for the tank and tbh that's probably the best method without going external surge tanks. Did you drill out the return quick fit on the top of the intank module (4mm I believe?) and also remove that check valve bead/BB that's in the swirl pot?Apart from undersized return line (if that's the issue) they are the only other things I can think of... Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,990 Member For: 9y 10m 27d Gender: Male Location: South Australia Posted 01/05/21 08:49 AM Author Share Posted 01/05/21 08:49 AM (edited) Bleh long day. Added a bulkhead fitting to the tank and ran a 10mm fuel hose from the end of the steel return pipe. Fuel pressure dropped from 6.5 bar to just under 2 bar. Set it to 4 bar, welded a giant split in my newish muffler and hit the dyno. Did a couple of hours on the dyno to dial in the custom PCMTec sd fuel map. Ended up with 474awkw at 23psi on 98 octane. 10 degrees of timing for the interested. It needs work but it's getting there. Edited 01/05/21 08:50 AM by Puffwagon My butt 2 Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,990 Member For: 9y 10m 27d Gender: Male Location: South Australia Posted 01/05/21 09:08 AM Author Share Posted 01/05/21 09:08 AM Here's a quick video 4 Link to comment Share on other sites More sharing options...
adams355 Member 529 Member For: 7y 7m 25d Gender: Male Location: Brisbane Posted 01/05/21 09:27 AM Share Posted 01/05/21 09:27 AM Geez must be a demon in the higher gears with that rev range. Are you thinking about a high stall. Link to comment Share on other sites More sharing options...
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