Header bolt sizes
#4
TECH Apprentice
iTrader: (20)
.75 will work - I used them for years NA. When I switched to my turbo setup I had several pull the threads out from the weight, heat, flexing, etc.
I would recommend going 1" because the hole is deep enough for them - More threads will hold better and be more likely to not strip.
I would recommend going 1" because the hole is deep enough for them - More threads will hold better and be more likely to not strip.
#6
TECH Fanatic
Personally, I would not use 3/4" bolts. I would get 1" bolts. If you're looking for locking bolts, I think there are better alternatives than Stage 8. Percy's is now making what used to be Breslin Split Locks.