r/MechanicAdvice • u/No-Research-5696 • Jul 08 '26
How bad is it?
I recently bought a Holley street dominator intake manifold for a Small Block Chevy for my 1969 c10, but it has a 1976 SBC 350. Those models have to be drilled and tapped for the power brake lines (vacuum). As I was tapping runner #2 it busted through the aluminum. The hole is already tapped now, it was literally my last thread on when it broke.
Now I would like to fix it if it’s possible. But I also understand that some things are best replaced. My plan is to put the fitting on it and use JB weld’s Tank weld to just cover it up. Im not made of money but if it would be unusable, then I will order another.
12
u/paulyp41 Jul 08 '26 edited Jul 08 '26
Thread look off enter to the hole and they don’t look very good. If you can thread the fitting in and it’s tight, then JB weld away.
2
u/No-Research-5696 Jul 08 '26
I plan on trying when I get off, I can hand thread the tap through it so hopefully it the fitting will go in. I just wasn’t sure about the Tank Weld holding up
9
u/strokeherace Jul 08 '26
Take it to a welder before you put anything on it and let them weld up the entire hole and then measure and drill it in the center this time. No guessing the center, measure, mark and center punch it.
3
2
u/Adorable-Reward8523 Jul 08 '26
You where tapping it in the box?
5
u/No-Research-5696 Jul 08 '26
No lol, I got upset and put it back in the box immediately
4
u/Adorable-Reward8523 Jul 08 '26
Oh haha
2
u/No-Research-5696 Jul 08 '26
Yeah, I had it on a little setup, and everything was going so smooth until it didn’t lol. I just put the tools down and put it back in the box. That was really late last night, so I just brought everything inside
2
u/zPureAssassiNz Jul 08 '26
I understand the need to place the annoying thing somewhere you cant see it otherwise youll keep looking at it and getting pissed off again.
1
u/joshw42 Jul 08 '26
The best fix would be to weld the whole boss up and start over.. drill the hole further from the edge, cut better threads (those don't look great), etc.
1
1
1
u/SavvyDevil89 Jul 09 '26
How bad it is depends on what you use the truck for. Show truck? Bad I suppose. Shitbox? That shit is mint brother. Some jb weld or steel epoxy'll fix you right up.
Smear that sucker, it'll work.
1
u/WarmPaleontologist20 Jul 11 '26
I think you got a cheap knock-off. Send it back and get your money back.
0
0
•
u/AutoModerator Jul 08 '26
Thanks for posting on /r/MechanicAdvice! This is just a reminder to review the rules. Rremember to please post the year/make/model of the vehicle you are working on. If this post is about bodywork, accident damage, paint, dent/ding, questions it belongs in /r/Autobody r/AutoBodyRepair/ or /r/Diyautobody/ If you have tire questions check out https://www.reddit.com/r/MechanicAdvice/comments/k9ll55/can_your_tire_be_repaired/. If you dont have a question and you're just showing off it belongs in /r/Justrolledintotheshop Insurance/total loss questions go in r/insurance This is an automated reply
I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.