Scott89TTA
Well-Known Member
- Joined
- Jul 12, 2005
Just what the title says...
How to change a TTA fuel pump in 30 minutes or less
So as some now know and some may be wondering how did I manage to change my fuel pump at the track this past weekend? I did what some would consider the cardinal sin and cut the trunk...yes I installed an access panel. Now before you get all excited and start bashing me I am not a hack...I have done quite a bit of machine and sheet metal work at my job as an engineering designer at JHU/APL. I had to think about this a good bit but in the end I knew I could do a professional job and would not regret it in the end. Now I absolutely know I made the right decision when I was faced with possibly changing my fuel pump on the side of the road. Luckily I made it to the track and easily changed it there.
Here is how I did it...
After locating where to cut I marked off my pattern and drilled a couple holes then used a nematic nibbler to cut out the sheet metal. After it was cut and cleaned up I located my hole patter for mounting screws. I drilled holes and pressed in 10-32 S/S PEM nuts around the opening. I made a gasket out of silicone rubber sheet and then fabricated a .090 S/S sheet metal cover that is fastened down with 10-32 x 3/8" S/S pan head screws. I cut all fuel lines and then coupled them with rubber fuel line and S/S hose clamps. The high pressure line received a brass compression fitting.
It takes more time to pull the back panels apart and pull back the carpet then it does to pull the fuel pump
Here are some pic's of the job...notice the access panel is nicely located between the support groves and by using the .092 S/S sheet metal (the trunk sheet metal is .032) it does not reduce any of the rigidity of the trunk floor.
How to change a TTA fuel pump in 30 minutes or less
So as some now know and some may be wondering how did I manage to change my fuel pump at the track this past weekend? I did what some would consider the cardinal sin and cut the trunk...yes I installed an access panel. Now before you get all excited and start bashing me I am not a hack...I have done quite a bit of machine and sheet metal work at my job as an engineering designer at JHU/APL. I had to think about this a good bit but in the end I knew I could do a professional job and would not regret it in the end. Now I absolutely know I made the right decision when I was faced with possibly changing my fuel pump on the side of the road. Luckily I made it to the track and easily changed it there.
Here is how I did it...
After locating where to cut I marked off my pattern and drilled a couple holes then used a nematic nibbler to cut out the sheet metal. After it was cut and cleaned up I located my hole patter for mounting screws. I drilled holes and pressed in 10-32 S/S PEM nuts around the opening. I made a gasket out of silicone rubber sheet and then fabricated a .090 S/S sheet metal cover that is fastened down with 10-32 x 3/8" S/S pan head screws. I cut all fuel lines and then coupled them with rubber fuel line and S/S hose clamps. The high pressure line received a brass compression fitting.
It takes more time to pull the back panels apart and pull back the carpet then it does to pull the fuel pump
Here are some pic's of the job...notice the access panel is nicely located between the support groves and by using the .092 S/S sheet metal (the trunk sheet metal is .032) it does not reduce any of the rigidity of the trunk floor.