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Topic Review (Newest First)
01-27-2014 03:58 PM
1971BB427 If the hole can be drilled deeper and threaded, then no need for a helicoil. Just get a longer bolt that reaches into the deeper threaded hole. Blocks are actually very soft, and easily drilled and tapped. I was helping my buddy swap a T56 into his Nova with a 350 SBC and it didn't have all three holes. I bolted the starter off the '95 Camaro on the block with one bolt and checked it for clearance to the flywheel ring. Then made up a sleeve that fit closely in the other starter hole, and used a smaller bit to drill a hole through the sleeve. Then removed the starter and drilled the hole out, and tapped for 3/8 NC thread. Worked perfect and easy to do.
01-26-2014 11:39 AM
Mitchman Last resort options: Drill and tap deeper. Drill and tap next to it. Drill larger and fill with dowel, then tap again. Cross drill, fill with dowel and then drill and tap that.

Hand crank....?
01-26-2014 06:32 AM
Richiehd Helicoil with stud may solve your issue
01-26-2014 04:53 AM
romie martino
broken starter holes

I have a broken starter bolt hole where the hole holds the starter with a bolt mine is the out sidebolt housing the engine block outside threading broke off and now the starter is not turn the fly wheel. so what im going to do is drill the hole higher and put a heli coil if that dosent work ill drill through the top and put a bolt if that dosent work its going to the gravyard
02-03-2013 11:42 AM
Greg T
Quote:
Originally Posted by cobalt327 View Post
Well, most times, the outermost hole (blue circle) is the one that cracks/breaks off. It's used by both patterns. But if the black circled hole is the bad one, the mini starter idea will work.



The OP hasn't bothered to reply to any of this, so prollably a moot point.

There are mini starters that have the straight across only or staggered only patterns, as well as mini starters that have two sets of straight across holes to accommodate both diameters of flex/flywheels.

Yeah, I reread the op and he said the outside hole broke. Repair is needed.
02-03-2013 09:51 AM
cobalt327 Well, most times, the outermost hole (blue circle) is the one that cracks/breaks off. It's used by both patterns. But if the black circled hole is the bad one, the mini starter idea will work.



The OP hasn't bothered to reply to any of this, so prollably a moot point.

There are mini starters that have the straight across only or staggered only patterns, as well as mini starters that have two sets of straight across holes to accommodate both diameters of flex/flywheels.
02-03-2013 07:16 AM
Greg T
Quote:
Originally Posted by 1971BB427 View Post
Some mini starters can accomodate both patterns, but the block would have to be drilled and tapped for the extra hole.

He says he has an extra hole in line with the outer hole. This tells me he is using the staggered bolt pattern. A mini starter will use the two good holes and solve his problem.
02-02-2013 09:11 PM
1971BB427
Quote:
Originally Posted by Greg T View Post
Cant use a mini starter? They can usually accomodate either bolt pattern.
Some mini starters can accomodate both patterns, but the block would have to be drilled and tapped for the extra hole.
02-02-2013 11:03 AM
Greg T Cant use a mini starter? They can usually accomodate either bolt pattern.
02-01-2013 09:07 PM
cobalt327
Quote:
Originally Posted by mon View Post
I have a broken block where starter bolt goes in I was wondering has anyone been able to make a bracket . Does anyone know how to get around this problem? I have an extra bolt hole inline with the inside bolt hole the outside bolt hole broke out very little cast around the outside stater bolt hole. Can someone help me.
One solution: Adapter used to mount a starter on a broken block.

02-01-2013 02:15 PM
timothale
mis alignment

If the starter is not properly smimmed for gear to flywheel clearance. if wrong bolts used etc . you end up with broken out holes or broken starter nose casting. Also the factory had a brace that holds up the end of the starter.
Go to the Wiki link at the top of this page, then click on engines, then when on engine page click on starters, ther are 3 or 4 pages of starter information
02-01-2013 11:34 AM
ssimpala I welded a stud in mine and it's been working fine for several years.
02-01-2013 07:10 AM
jaw22w Years ago, I had the same problem. I built the area up by arc welding with nickel welding and re-tapped the hole. Worked just fine.
01-31-2013 08:35 PM
1971BB427 Since the inner bolt hole is good, you can come off the bellhousing with a support if the block is actually broken enough to allow a nut where the threaded hole was, and then clamp that side with the bracket and a bolt.
Had a friend who's block broke on the outside hole and we did this, but actually had to grind away some material to allow room for the nut, as half the threaded hole was still there.
01-31-2013 07:50 PM
vinniekq2 mount starter to bell housing if its a standard
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