Placement of fuel filter |
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Placement of fuel filter |
Mcraneiowa |
Jun 24 2020, 11:04 PM
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#1
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Member Group: Members Posts: 82 Joined: 16-June 20 From: IA Member No.: 24,387 Region Association: None |
Looking for insight on placement of fuel filter and pump. I know there are varying opinions, front or back but here is my twist and want to see what anyone thinks. It’s okay if you question my thinking.
To bring you up to speed, I have the entire fuel system removed and just installed stainless fuel lines from Tangerine. I’m thinking about placing the fuel filter up under the tank and leaving the fuel pump in the rear. I just ordered a Bosch 69133 pump to replace the original one. So this changes routing the fuel lines to two ports, one on each side of the pump verse three on one end of the pump. The hard lines come into the engine bay facing towards the passenger side which does not provide enough room to place the filter then the pump without looping the fuel lines. I’m trying to think how to keep things neat and simple. I’ve attached a picture of the pump mounting location, original to the car. Please share your thoughts and ideas. If someone is really for mounting everything up front under the tank, I’d like to see some good pics . That seems like that could get crowded and hard to work on later. Just having a filter up there with a bit of extra hose, I’m thinking I could easily pull that through the 6” hole to change without much hassle. Thanks, Mike |
wonkipop |
Jun 27 2020, 03:07 AM
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#2
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Advanced Member Group: Members Posts: 4,402 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille |
keep the loops as long and easy as you can - but keep them fixed close to the longitudinal (if you go for 72-74 fix of FP to longitudinal). its hard to do.
my theory is the fuel likes to vaporize if the loops or bends are too tight. (yet to prove that in a hot aus summer so have to see if i have them loose enough). the back loop out of the fuel pump is hard one with the two port FP - unlike og three port which had all the lines come out of one end (pointing towards rear) - that allowed the FP to sit close into the corner. a tight fit with the two port in the 72-74 location given its got lines coming out of either end. the pump is mounted in my car with the out side to injectors pointing to front of car - so we could still mount a filter before the pump in orig location. that makes the loop out a tightish one as its trying to get back and go towards rear of car. when i ran the car in the 90s/early 00s never had vaprization problems with the og set up - and aus is hotter than cali in summer. wish icould still buy an og three port pump as it suits the amount of space available for lines. but its an outmoded design and i get that. looks to me like you have early fuel pump mounting location off rear firewall. i believe this location had the most problems with fuel vapor lock. just the same it would let you do a simple linear run of filter, pump and pressurised exit out the other end. what i describe above for 72-74 gets more complex. |
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