FASS for 1st Gen?

[CTD 600]

I have a 2nd Gen. truck. 1999. I was wondering if the FASS 150 I have on it currently will work on a 1st Gen. truck? Is there a need for one on the 1st Gens?

 

[Don Tanklage]

put a gauge on it and find out what pressure relief spring it has in it



just cuz they shipped it for a 1st gen or 2nd gen or what ever does not matter



i asked for a 16# spring and mine came with a 22



the ve pump does not like a lot of inlet pressure so if i was you that is what i would do (check it myself)



i think the right piston pump is the way to go on a first gen



don

 

[LowFly]

I have a 2nd Gen. truck. 1999. I was wondering if the FASS 150 I have on it currently will work on a 1st Gen. truck? Is there a need for one on the 1st Gens?

A system can be made to work just fine... but its going to involve some customer input as we dont have an exact application for that year.



Some things i have heard about the 1st gens:



Intank pickups will not flow what the FASS needs. This will need to be tended to.



Fill neck return manifold... . I dont know what size this is..... we do have several sizes, but which one? Get me the ID specs of the tube and i can see what we have that will work.



VE pump connection. I out on that one. Im sure its not a big deal... but i dont know of the top of my head whats needed. I have a M12x1. 5 - -8 JIC and a M14x1. 5 - -8 JIC. Any fitting that woudl work with 3/8's hose would be just fine.



Pressure... . we can get it down to about 8 PSI... . perfect for a VE... thats not an issue... .

 

[Don Tanklage]

hi dan, maybe i should not have worded that the way i did...



when i purchased my fass sys i already had done away with the factory tank and was using a large aftermaket tank that not only has a sump, but is mounted high above the fass. so i knew supply would not be a problem for my application. guess it is not that big of a deal to install a large dia dip tube if a guy is using the stock tank, but that is something you dont have to buy when using a piston pump.



then there is the whole pressure thing. i tested my fass with 2 gauges (both autometer) and both read over 20 psi. i bought a aei reg (for $125, minus fittings) to fix that, but i dont know if avg joe wants to deal with that



my '92 had a banjo at the inlet (12mmx1. 5). its real tight there but if you run a 12x1. 5x-8male (straight) you can get a 90 degree -8 x 3/8 jic on it. but it is real tight. if you dont have snap on wrenches you prolly wont be able to get it tight



i dont know if the non-i. c. trucks used a diff fitting?



don

 

[Don Tanklage]

ps - our first gen trucks dont use a 'fill neck return manifold'



the ve has its own return already plumbed to the tank

 

[LowFly]

ps - our first gen trucks dont use a 'fill neck return manifold'



the ve has its own return already plumbed to the tank

Yes, But our FASS system uses a fill neck return. That is what I was refering to.



Do you have a FASS or HPFP. The FASS has the 2 filters and the HPFP is just the pump?

 

[Don Tanklage]

just the pump



if your system has a return (and i am hoping it does!) (never heard the term 'fill neck return' before?) it could probably be tied in to the trucks stock plastic return line. that line is 3/8 on the o. d. , very thin wall, but i dont have the exact inside measurement. sorry



don

 

[LowFly]

just the pump



if your system has a return (and i am hoping it does!) (never heard the term 'fill neck return' before?) it could probably be tied in to the trucks stock plastic return line. that line is 3/8 on the o. d. , very thin wall, but i dont have the exact inside measurement. sorry



don

The HPFP can be made to work quite easy on pretty much anything. There is no return to mess with (Internally Regulated) and all you need to do is just feed it into the back of the stock filter head. Our pump does the rest and the stock pick-up in the tank could be left alone with this setup because the HPFP is only feeding the engine what it needs at any given moment. Its an on demand pump if you will so suction volume will be more on line to what DC designers had in mind.



The FASS has its own return line back to the tank. The kit comes with a Return Manifold which is installed on the fill tube neck for the FASS to return. If you returned this fuel back to the tank Via the stock return, it would cause lots of issues because of restriction. Pump and injectors would not like the added return back pressure and the FASS system pressure would be increased due to return restriction. All around a bad deal for a VE pump that likes 5-10 PSI.

 

[Don Tanklage]

thats why i said probably...



with the 150 gph pump if you use a true return system (like i am building right now) the return line has to be a min of 1/2" if the return line is less than 10'. thats if you are running the low pressures you mentioned. if the return line is over 10' (like it might be coming from a regulator mounted up front (near the ve) going all the way back to the stock tank) the return line would have to be 5/8"



sounds to me like avg first gen owner is gonna be a lot better off just buying the pump (and maybe a remote filter), rather than using the whole system



thanks for the advice on not tying anything into the stock return



glad you are working on a system for the first gens



don