Decompression holes

[sleddude]

Did Mark get his Y yet?

SLP sent me a new y-pipe to warranty the one that failed. Great people. The new one had a different part number as well.

 

[sleddude]

I got caught up on engine building and decided to play around with this on a spare cylinder. Here's my work:
-I drilled out the hole from the exhaust manifold side to 3/32" purely for access
-Then I drilled 1/4" into the second section (from the ves cavity in towards the cyl wall) to 3/64" which worked for the size of my set screw.
-Installed a very small set screw in the hole

It went well, I can't see how anything could go wrong. I am going to go ahead and mod my current cylinders the same way.

In this pic you can see the path of the hole which I have inserted a small wire through

All the drilling is done in this pic

In this pic you can kinda see the set screw in position to be installed

Nice job Dan.

 

[guidoxpress]

ttt for the summer to do lists

 

[Danbot]

ttt for the summer to do lists

Heck yeah, plug them suckers!

 

[heynagel]

Just a quick question. Did you have to tap threads for that set screw or did you just force it in?

 

[Danbot]

Tapping the thread probably would have been the more professional direction to take, I just drilled them to an appropriate size and screwed them in. The are very secure, so I am not concerned about my choice.

 

[heynagel]

awesome. I think using a tap would be a big pain in the azz, but I don't have a test cylinder to experiment with. So I figured I would ask. Thanks

 

[Danbot]

awesome. I think using a tap would be a big pain in the azz, but I don't have a test cylinder to experiment with. So I figured I would ask. Thanks

Yeah if my memory serves me correctly, I did not see an easy way to get a tap in there. The set screws I used were quite small and had a tapered end to the threads so they went in nicely with a little permanent thread lock. Good luck

 

[heynagel]

Thanks for the tip!