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  1. #1
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    Default 304 308 Bosch BXH136 Starter Motor and ARP Replacement Bolts Info

    Hey all,

    I've had a fair bit of hassle with this recently (and in my search have come to realise many others have, too) so here's some info for the future to help others out. Please feel free to share this around any other forums, friends or anti-social media. I don't use social media so don't assume I already have - I haven't. Posting here first.

    So... starter motors. First things first, Bosch (and I'm only talking about Bosch here, seeing as you'd be a crack-smoker to buy any other starter, unless you want or need something like a Tilton race starter), but yes: Bosch - have re-made the BXH136 Starter. And in turn the BXH138 - which is the SAME starter with a heat-shield. The 136 is not stringently known as a 'gear reduction starter' in Bosch world, but rather, an 'eco starter' as they so classify it.

    This newer version is a little bit more everything. It's a little lighter, a little more compact and a little more powerful. Which is win. It's a nice little bit of crumpet.

    However as you can see below, in this process of re-manufacturing the starter, they have cast two identical fixing points instead of the x1 long and x1 short original fixing points. Problem Numero Uno.

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr


    This means one would now need TWO long bolts instead of the alternating sizes. Which means purchasing TWO bolt kits. However: Problem Numero Dos, is that Holden have stopped making BOTH of them. Yes, just like their flywheel bolts as I recently found out - all the way from HT to VT - Holden no longer make starter motor bolts. Rare Spares don't have them. You cannot find them anywhere. Which is an issue (for those who do not know), because - starter motor bolts are of a very unique design.

    And unless you are once again an advocate of the crack-pipe, you shouldn't be using regular bolts - which is the only thing the aftermarket has to offer, besides second-hand original bolts.

    Thankfully, I did some digging and measuring and swearing and more measuring and a bit of googling, and after scouring through the gods of ARP's Chevrolet catalogue, found some that do the trick nicely.

    It is part number for GM: 430-3513. Which is a 4.400in long, 3/8 UNC starter-knurled bolt, in the pants-tightening 12pt stainless finish.

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr


    And thanks to all the measuring and swearing, works perfectly with the new starter all in the one kit. And allows the locating knurl a perfect amount of contact both in the starter and in the block once tightened down - with plenty of thread engagement. One might even say, 'just like a bought one'.

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr


    TL DR:
    Buy a Bosch BXH136 Starter.
    Buy some ARP 430-3513 Bolts.
    Job done.

    Cheers

  2. #2
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    Default Pls Merge to Previous Thread

    Here it is in-situ, with a few shots to show the compactness compared to its predecessor. Easy slip-in fit even with big headers and a big bellhousing.

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

    Bosch BXH136 Starter Motor 304 308 V8 ARP bolts by B&E 355, on Flickr

  3. #3
    been here .......too long Smitty2's Avatar
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    .. done
    and thread is a sticky
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  4. #4
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    Default

    Nice one. Have the same issue. Question though. Is it that bad using normal bolts? Or will the starter start to walk a bit.

  5. #5
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    I have never had an issue using normal bolts but appreciate the info nonetheless.

  6. #6
    been here .......too long Smitty2's Avatar
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    Quote Originally Posted by Castiron355 View Post
    Nice one. Have the same issue. Question though. Is it that bad using normal bolts? Or will the starter start to walk a bit.
    .. you cannot use 'normal' bolts on this
    as the standard ones are- one is long the other short (very short)

    you need the kit with two LONG bolts
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  7. #7
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    Sorry. I got the same starter as you. I just bought 2 long bolts from a bolt shop. Was just asking the importance of the knurled sections. All good.

  8. #8
    Part of the furniture Deuce.'s Avatar
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    Without the knurling the starter mesh makes strange noises (trust me, been there before)
    I wrote about it on JC a few years back.
    Here:
    Well I got some ARP's on order, 430-3507 which are 3/8-16 UNC, with about 4.5" under head length
    also got some cheap Dorman one's as well, they are 4&5/8" long (just incase)
    Both are knurled.
    And here:
    All fixed. Dorman 45658, large washer and the noise is gone.
    Tryed the arp bolts, but the thread bottomed out quite early and would need 7-8mm of washers to work.
    And here:
    If ARP is desired, than I would try 430-3514 or 430-3513.
    Although I cannot find anywhere that sells them yet as they are a fairly new part number

  9. #9
    been here .......too long Smitty2's Avatar
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    Quote Originally Posted by Deuce. View Post
    .........................
    If ARP is desired, than I would try 430-3514 or 430-3513.
    Although I cannot find anywhere that sells them yet as they are a fairly new part number
    the 430-4513 are available from JEGS in the States
    thats where I got mine from (as the CVR starter I run comes with NO bolts ,...needs TWO long ones)
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  10. #10
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    I just got them from an eBay shop locally. They're not that exotic a part anymore, that they aren't stocked (you know unlike those pain in the ass obscure special order bolts you have to wait 10 days for ARP just to ship out to your seller).

    Well... you basically shouldn't, and I wouldn't use regular bolts myself. Maybe unless there was absolutely nothing else and I just had to get the thing going and was going to change them later.

    Will it work? Yes. However, you can get a whole host of issues from the mesh as described, and you'll also cause unnecessary wear long-term as well. That's why the bolts (and block) are designed that way. It steps down x3 ways - the length, the knurl and then the thread.
    Last edited by BLO 767; 19-03-2018 at 10:51 AM.

  11. #11
    Part of the furniture Deuce.'s Avatar
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    Quote Originally Posted by Smitty2 View Post
    the 430-4513 are available from JEGS in the States
    thats where I got mine from (as the CVR starter I run comes with NO bolts ,...needs TWO long ones)
    I should have added, my original post on JC was in 2014.

  12. #12
    Senior Member VHSLX253's Avatar
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    Quote Originally Posted by BLO 767 View Post
    I just got them from an eBay shop locally. They're not that exotic a part anymore, that they aren't stocked (you know unlike those pain in the ass obscure special order bolts you have to wait 10 days for ARP just to ship out to your seller).

    Well... you basically shouldn't, and I wouldn't use regular bolts myself. Maybe unless there was absolutely nothing else and I just had to get the thing going and was going to change them later.

    Will it work? Yes. However, you can get a whole host of issues from the mesh as described, and you'll also cause unnecessary wear long-term as well. That's why the bolts (and block) are designed that way. It steps down x3 ways - the length, the knurl and then the thread.
    Which eBay store was this, the only ones Ive been able to find via eBay are from the States and Ive checked with VPW while however they have ARP bolts...that dont have these particular ones and would have to order them direct from the States.

    :-)

  13. #13
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    Quote Originally Posted by VHSLX253 View Post
    Which eBay store was this, the only ones Ive been able to find via eBay are from the States and Ive checked with VPW while however they have ARP bolts...that dont have these particular ones and would have to order them direct from the States.

    :-)
    Seller is SurplusSalesAustralia. Perhaps I bought the last ones as he doesn't have any atm.

    Great deals from surplussalesaustralia on 430 | eBay Stores


    Cheers
    Last edited by BLO 767; 20-04-2018 at 05:24 PM.

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    .... Edited

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