Technical > Roo Man's Room

burn down tubes ?? about lower fram rails

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225digger:
i take it there is no rule for drilling the lower frame rails to add burn down hook ups in the lower rails ? im thinking about putting the puke tank out back instead of in the front . and just want to make sure i do it right when installing them into the rails ...... also , how is the inside of the tube blocked so oil doesnt go forward , and then in the back i guess this really isnt an issue since the rear tubes go up .

pics , advice , suggestions are highly appreciated ...

rooman:
If I am going to run the puke tubes through the lower frame rail I usually put a freeze plug in the rail a few inches ahead of where I run the vent tube. I also sleeve the rail at that point to add some reinforcement.
This is the tube and sleeve assembly ready to slip over the lower frame rail.


In the case of Glenn's car I left the sleeve loose on the rail until we put the motor in the frame and determined exactly where we were going to run the burndown tubes. You can see them hanging down in this photo.



 I then welded the sleeve in place and used a holesaw to open up the rail. With 1.25" burndown tubes a 1.125" holesaw slips right down the tube. If you are doing a retro fit to an existing car the best plan would be to clamshell the rail to create the sleeve.

Roo

225digger:
thanks roo . helps alot . i guess the big question is , what does everyone preffer mount the puke tank up front or in the back ? 

GlennLever:
I think in the rear in back of the tires, if for no other reason to keep the tires clean.

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