10/14/2026
DIY Welding Trunk mounted vent tank
These tanks are designed for cars running alcohol and forced induction. This tank can hold up to 5 gallons. Tank is baffled to help prevent sloshing and blow by to exit the stack. Tank measures 10"w x11"L x10"T
Tank is offered with 3 options of inlets:
12an
16an
1-1/4 tube For 1-1/4" blow down hose
Tanks come with our billet mounts for 3/8 bolts for ease of welding and mounting or our 3/8 recessed weld on bungs
Tank comes with a 8 an fitting welded on the back. (Unwelded tank comes with a loose fitting to mount where it works best) so that you can cap it or you can plumb line to the outside of the car to drain it.
Stack is 2" diameter and 20"long That way it can be trimmed to fit out the trunk lid
Tank can be bought welded or Unwelded, Unwelded tank is tabbed for easy assembly
****** welded tank shown is not the same dimensions it was a custom tank done in house and shows the recessed weld in bungs for mounting*******
https://blainbrothersracingllc.com/shop/ols/products/large-trunk-mounted-ventpuke-tank