21 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHengine block side of exhaust manifold repair
Leading reported evidence
Install header back
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
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Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed · Original poster
i did successfully used an aluminum bolt to �plug� the hole to which I then drilled and tap after I installed the header back on.
Leading evidence: 'Install header back' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install header back' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed · Original poster
i did successfully used an aluminum bolt to �plug� the hole to which I then drilled and tap after I installed the header back on.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I used an aluminum rod off Amazon that I then threaded.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
Since I am also do A&P certified work, I used these guys.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
21 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
Glad it worked for you, done it many times on Harley cases and trans cases.
Two bolts broke off when removing the exhaust manifold. I was successful in drilling out the rusted bolts from the engine exhaust port but one hole is now off-centered.
I will not be able bolt on one of the end bolts to the manifold. I am thinking of just filling in this with some epoxy and drilling a new bolt hole.
What high temp epoxy would you recommend? I was thinking of using the JB Weld ExtremeHeat metallic paste.
Another option is the H-450 Alumbond but working temp is only around 250F.
Highly unlikely either of those repairs will work. U should have bought or asked to borrow the coreect tool to make the repair. To fix it correctly u need to find a shop that can tig the hole shut and use the fixture to redill and tap.
Or u can modify the exhaust header flange with a die grinder.
https://www.stomskiracing.com/produc...olt-repair-kit
What I have done in the past is drill the offset hole to next size and tap the hole for a aluminum bolt and cut flush with the surface, then install manifold with as many bolt you can, use a transfer punch and drill and tap back to stock size. no issues since.
I use 6061 t6 aluminum bolts and red Loctite..
I was curious about this. Red loctite softens at 500F, and exhaust manifold temps, general searching, is stated as anywhere from 300F to over 1000F. I really wonder what the block temperature is for our engines, where these studs are.
I haven't looked specifically, but you'll probably have to search a real fastener source like McMaster Carr or maybe Fastenal.
Edit: https://www.mcmaster.com/products/screws/thread-size~m10/material~aluminum/thread-pitch~1-5-mm/drive-style~external-hex/
I wasn't really concern with the aluminum bolt backing at all, if one is concern there threadlockers good to 2000 F such as this
Hot-Lock� Extreme High Temperature Threadlocker – Vibra-Tite
Since I am also do A&P certified work, I used these guys.
6061 T6 Aluminum Hex Bolts | KD Fasteners, Inc.�
I formulated hi temp products (272, 266) that barely held up at 400F and only for a short time. The standard red stuff, 262 e.g. will soften and burn well below that.
Thanks! I swore I had read 500f on a package, but looking now, you are of course correct. 271, 272, and 262 all list operational temps up to 300F, and a removal temp of 450F.
Unless I'm missing something, your aluminum plug will be mechanically retained by the new exhaust fastener.
In that case, no loctite would be required.
Just an update
i did successfully used an aluminum bolt to �plug� the hole to which I then drilled and tap after I installed the header back on. Having the header bolted on allowed me to get a near perfect centered hole. I used an aluminum rod off Amazon that I then threaded. This was way easier than getting an aluminum m8 bolt which was near impossible to find and expensive. All good. This fix took longer than I had hoped. Hell longer than doing the IMSB/clutch. Next on the list is replacing the oil cooler and mounting back the transmission. Finally, replace the coolant tank.
thank you for the suggestions!
