|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|
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.
|01-26-2014 06:32 AM|
|Richiehd||Helicoil with stud may solve your issue|
|01-26-2014 04:53 AM|
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|
Yeah, I reread the op and he said the outside hole broke. Repair is needed.
|02-03-2013 09:51 AM|
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|
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|
|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|
|02-01-2013 02:15 PM|
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|
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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