Engine/Transmission (1998.5 - 2002) Assassin mechanical fuel pump...

[wlowe]

Anybody using one of these assassin mechanical fuel pumps and if so how do you like it.


http://www.dttdiesel.com/mobile/Product.aspx?ProductCode=dttfp

 

[BarryG]

Not so sure that DTT is still around. I used one of their RASP pumps a precursor to the assassin and it worked great You might try glacier diesel
http://www.glacierdieselpower.com/product.aspx?pf_id=FB-98502

they run off the crank with a belt. I never threw a belt or wore one out in well over 100k miles with it. Nice that pressure goes up with higher rpms. On the rasp I had an issue with the front seal once in a while but it was $2 seal and literally took 15 minutes to change out. I have not seen the fuel boss in person so it may not have the same issue and again it was not a big issue. What would happen was dirt would work its way up the shaft into the seal and the very slight leak would occur after many miles. I think I solved the issue on the rasp by putting a couple of rubber orings over the shaft and pushed them all the way up the shaft I could, thereby helping to protect the seal. The dirt/grime would have to get past those o rings before it got to the seal. I used the fattest and smallest diameter o rings I could get on the shaft After I did that I never had to change a seal again but I also took it off (the whole pump system) after about 25k once I tried that. I only took it off because I put in a cam and it had a fuel pump lobe on it and I switched to a 12 valve mechanical pump. I only switched because of the cam change the rasp worked as advertised. the 12 valve pump just cleaned up up a lot of extra plumbing that the rasp, fuel boss or assassin needed. If I didn't have the cam I would still be using it. Never been a fan of the electric pumps.

 

[KY Diesel]

I've had the GDP fuel boss pump for about a year now. It consistently runs at 16psi regardless of throttle position. You get the redundancy of keeping the oem lift pump, which is nice in case of a failure or priming the system. I haven't had a single issue with mine and I highly recommend it.

 

[Bob4x4]

Dtt does still exist just much lower key these days

 

[wndwlr64]

I have a gdp fuel boss & it works perfect.