Thanks for the input.
I just got the TRE yesterday and I am positive it will be good enough.
Better than not running at all, that is for sure!
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I have a TRE340 in my 2dr 24v/turbo car and it's been fine for 5+ years, but I just feel like TRE is (mostly?) knockoff stuff (knockoff siemens dekas, knockoff walbros, etc.)
Basically the only grounds I have for saying this is that the pump looks basically identical to the walbro (now TI Automotive) 255 I bought to replace the TRE.
The Walbro was ordered from highflowfuels/Quantum Fuel Systems along with some EV14s since their prices are good/numerous people vouched for them selling genuine stuff/they have an ebay store so shipping/border fees to Canada were easy and visible.Leave a comment:
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Lemme bring this thread back again.
1987 325is
I'm considering doing the single pump setup and was looking at the TRE340 as per https://www.r3vlimited.com/board/for...ump-conversion
It's ironic hearing people talk about fuel starvation after conversions, because this is something I have dealt with forever with the completely stock configuration.
Anything under 3/8 tank (as accurately mentioned before in this thread) and I get cut out under hard corning (I don't remember off hand which direction).
First time it happened I was going pretty hard in the paint on the Dragon and it really caught me off guard.
I have a parts car with a good lift pump and I am going to swap that over for now but it seems like it would be nice to swap for one pump, just to simplify things.
I see people saying the TRE are crap and they have bad customer service, and some saying that the Wals are fragile, as well.
What is the general consensus, now, as to the best pump for a single pump conversion?Leave a comment:
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Reviving an old thread since I want to clarify a couple of things:
1. In the stock pump, there's a beige type rubber coupler - is that just a straight forward coupler to keep the fuel pump in position and can be replaced by the rubber hose?
2. For the wiring, my E30 is brown/red and the Walbro pump is black/red - assuming it's red>red and black>brown?
May well just pick up a spare E30 pump so I have a full spare. Always make me nervous playing with fuel systems a couple of days before a trip...Leave a comment:
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Thanks. Once I pulled my cover off, I found that the large fuel line had recently been replaced. No need to worry about that one for a while!Leave a comment:
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In normal use these might be fine, but I've burned through 3 of these junk (Walbro) pumps on my 1989 track car. With each pump, fuel starvation started on carousel right hand turns after about 3/8 a tank. Bought a complete assembly from Autozone for $190 and, while I still have starvation issues, haven't had to replace the pump every other time out on the track.
The Walbro might be good for many applications, but if you're tracking your car, even if you dremel out the support to be sure that the pump will sit lower, any starvation seems to kill these things very quickly. The other thing is using butt connectors to wire something in a fuel tank was never something I was comfortable with in the least.
My .02 and life experience.Leave a comment:
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NeverEnough02 Honestly I cant remember off the top of my head, I think its 5/16th high pressure hose (or 8mm ID 13mm OD?) but 5/16 is at local auto shops. I forget the bigger size hose but just pop up that cover under the rear seat and see if it is written on the side or maybe take a measurement. sorry I cant help a bit more on that.Leave a comment:
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Thanks for the early model break down. What sizes did you need for the double sized high pressure fuel line? I am going to do this on my early model soon enough and would like to order ahead of time.
just a little note for the early model guys. I converted to a single in tank 255lph pump and here are my quick notes.
-there's a ground going to the old high pressure pump, I grounded it since it seemed like a smart idea. The Hot wire there you will want to cap off and keep protected from shorting out on something.
-feed a high pressure fuel line down from the back seat down the tank towards the exterior fuel pump. you want to run a high pressure line to mitigate risk of bursting the low pressure one. this is VERY easy, i dont understand why people struggle here.
-I bypassed the two fuel pulse whatevers by the exterior pump and just went directly into the hard line, no difference noticed.
-the fuel injector line i used fit on the hard line but not the outlet of the fuel pump housing. a step down hose is needed. or if you're creative and like risks, take the old low pressure hose, and cut off about 5 inches. then feed a piece of the high pressure hose into the low pressure hose piece (about half way) enough that the low pressure hose can go back onto the fuel pump outlet tube and that the high pressure hose butts up against the tube. you should then fit a male to male adapter into the fuel hose going down the tank and into the new double layered hose. you want to use the adapter so when you put a clamp on the double layered hose it can actually clamp the two hoses tighly without collapsing them. clamp all the ends of hoses. Or you can do the smart thing and just get the two sized high pressure hose and avoid this mess.
-the fuel pump i had was very similar to a walbro (i think same size specs) and the early fuel pump housing does not have the bracket holding it on the bottom that you are to trim in the later models. instead if your pump hits the bottom of the tank and you cant bolt the top down, you need to remove (in my case just under an inch) some material from the tube the fuel pump feeds into. I used a hack saw and then a file to dull its edge. the hose that connects the two burst after a short while so use some high pressure hose that wont dissolve when immersed in gasoline. clamp these down tight and make sure your pump isnt sitting on the tank but is close.
-wiring is pretty straight forward I cut soldered and shrink wrapped my new hot wire and grounded the pump to the return tube.
-the whole thing is pretty wobbly since there isnt anything holding it together besides wire and a hose, so use something to keep the unit tight against the drain tube. zipties i wouldnt trust in gas for too long, but using too big of a hose clamp may make fitting the unit back into the tank difficult. use what you've got.
obviously do any cutting, soldering, shrink wrapping with the pump out of the car and preferably in a different room so you dont burn your car down, or yourself. just some notes for us early model guys.
Here's a picture of my fuel pump mounted to the early assembly, I believe it was prior to me cutting a little off the tube that the hose fits onto.
20160111_123724
and here is the Early model in tank fuel pump setup, the larger Diameter hose on the bottom is the feed going into the engine, and the small diameter hose with the bend is the drain going back into the tank. the Early model fuel tanks dont have the drain like the late models.
20160111_103843Leave a comment:
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Anyone have ANY suggestions on a fuel pressure regulator!? The DIY write up worked great! No starvation at all HOWEVER, it's pumping so much into the rail. I can smell raw fuel and I suspect the FPR is not holding up. Anyone have any suggestions?Leave a comment:
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I did this conversion a year or so again on my '86 car with dual pumps using a TRE 255. Once I had pulled out the old pumps I did not like the idea of putting a dodgy joiner from the 8mm fuel hose to the larger inlet on the housing in the tank so I went to the junkyard and got a couple of late model pump/housings and the fuel line which goes over the tank. The late housing just drops in without the hassle of bending/cutting and if the late model junkyard pump works you are home free in any case without shelling out for a new pump. This has been working perfectly for over 12 months now.Leave a comment:
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