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| Bolt size needed please. https://www.ausmini.com/forums/viewtopic.php?f=2&t=83260 |
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| Author: | clovus [ Sun Oct 27, 2013 12:52 pm ] |
| Post subject: | Bolt size needed please. |
Can anyone tell me what is the size of the bolt that holds the top engine steady on the block? I seem to have lost the one that sits above the clutch side of the engine. Thanks! |
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| Author: | mini_mad_matt [ Sun Oct 27, 2013 1:31 pm ] |
| Post subject: | Re: Bolt size needed please. |
5/16th UNF and at a guess it's probably 1-3/4" long |
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| Author: | clovus [ Sun Oct 27, 2013 5:01 pm ] |
| Post subject: | Re: Bolt size needed please. |
Thanks Matt for the reply |
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| Author: | Kurross [ Mon Oct 28, 2013 11:09 am ] |
| Post subject: | Re: Bolt size needed please. |
While we are on topic of bolt sizes, can anyone tell me what the two sizes for front seat brackets in a 850? (The inside and outside ones are different on mine) Cheers mark |
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| Author: | keithj [ Mon Oct 28, 2013 12:17 pm ] |
| Post subject: | Re: Bolt size needed please. |
mini_mad_matt wrote: 5/16th UNF and at a guess it's probably 1-3/4" long Possibly 2 and 1/8" long. Pommie cars use HBZ0517 part number.... Are Aus cars the same? Cheers. |
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| Author: | drmini in aust [ Mon Oct 28, 2013 12:38 pm ] |
| Post subject: | Re: Bolt size needed please. |
Kurross wrote: While we are on topic of bolt sizes, can anyone tell me what the two sizes for front seat brackets in a 850? (The inside and outside ones are different on mine) Cheers mark They were all 1/4" UNF threads when built, perhaps some of yours have since been tapped out to 5/16" or 8mm or whatever.. |
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| Author: | Kurross [ Mon Oct 28, 2013 2:42 pm ] |
| Post subject: | Re: Bolt size needed please. |
drmini in aust wrote: They were all 1/4" UNF threads when built, perhaps some of yours have since been tapped out to 5/16" or 8mm or whatever.. ok thanks for that, It does make sense, as i need to tap a new thread for one of the brackets (which was a smaller bolt of the two). Just need to purchase a tapping tool thingo now, should have got it from the fastener place last week when I buying the bolts with wingnuts on them to hold seat to bracket. Cheers, Mark |
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| Author: | winabbey [ Mon Oct 28, 2013 5:37 pm ] |
| Post subject: | Re: Bolt size needed please. |
According to Mini parts book PUB1056M the long engine steady bracket bolts are part HBZ513 (850), HBZ515 (997 & 998) and HBZ514 (1098 & 1275). The Mini Clubman parts book PUB1052 also shows HBZ514 for the 1098 & 1275 engines. HBZ5 means 5/16" UNF hexagon headed screw, zinc plated. The suffixes indicate the length: 13 is 1 5/8", 14 is 1 3/4" and 15 is 1 7/8". The short bolt at the front of the bracket is HZS506 or 507 (doesn't show the reason for the difference), which is 5/16" UNF hexagon headed screws, zinc plated, 3/4" (06) and 7/8" (07) in length. The seat bracket bolts in both the Mini and the Clubman parts books are HZS405, which are 1/4" UNF hexagon headed screws, zinc plated, 5/8" long. |
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| Author: | clovus [ Tue Oct 29, 2013 7:43 pm ] |
| Post subject: | Re: Bolt size needed please. |
Awesome info wins bet Also glad someone else found this thread useful. Thanks again |
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| Author: | slacko [ Tue Oct 29, 2013 7:54 pm ] |
| Post subject: | Re: Bolt size needed please. |
The short bolt at the front of the engine mount may be different because there is two different outer bracket , one has a spacer between the two metal brackets , longer bolt the other does not have the spacer , short bolt GET IT RIGHT or you will end up in the water jacket number 4 cylinder end Mark |
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| Author: | drmini in aust [ Wed Oct 30, 2013 9:37 am ] |
| Post subject: | Re: Bolt size needed please. |
These crossmembers are flimsy. It is pretty common for the crossmember to crack around the original captive seat bracket nuts. Where the nut has gone AWOL I have fixed a few by drilling 12mm through front and back, then brazing a 12mm dia bar in there with a 5/16" UNF thread tapped in the front. Drill the brackets to 5/16" for the bigger bolts and it's way stronger than when new. |
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