Alternator mounting bracket
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Anyone got a picture or a dimensioned drawing of the mounting bracket for an alternator - the one that bolts to the block. I know it?s different to the original dynamo one but quite how different?
Background to this is that when I swapped to an alternator many years ago I adapted the dynamo mount, cutting and welding it to line up the pulleys. It?s worked ok - and still does- but when I was under the car yesterday I noticed the pulley alignment left something to be desired when viewed from underneath. I can also see the belt is wearing on one side only where it?s running out of line. The existing mount doesn?t have enough material in it to adapt it further so I?ll need start from scratch and fabricate a new one. It would be easier if I knew what the bracket looked like to give me something to work from.
Background to this is that when I swapped to an alternator many years ago I adapted the dynamo mount, cutting and welding it to line up the pulleys. It?s worked ok - and still does- but when I was under the car yesterday I noticed the pulley alignment left something to be desired when viewed from underneath. I can also see the belt is wearing on one side only where it?s running out of line. The existing mount doesn?t have enough material in it to adapt it further so I?ll need start from scratch and fabricate a new one. It would be easier if I knew what the bracket looked like to give me something to work from.
Stuart Holding
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
- 69S4
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There are stronger versions of bracket, specific to alternators, that may be of help
viewtopic.php?f=38&t=24554
viewtopic.php?f=38&t=24554
S4SE 36/8198
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nmauduit - Coveted Fifth Gear
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Thanks for that link. I'd looked last night but for some reason hadn't come across that discussion. There looks to be a few versions / designs of the bracket in existence with some of them looking seriously hefty. The one that SJ sells looks pretty much like what I made by cutting and welding the dynamo one - except it pushes the alternator an inch or so further forward, which is what I need.
If it works well enough for them to sell it then it'll probably do for my purposes. Given what they're charging and the 10 days it'll take to get one from them atm I suspect I'll spend an hour or so later on making one based on their concept.
If it works well enough for them to sell it then it'll probably do for my purposes. Given what they're charging and the 10 days it'll take to get one from them atm I suspect I'll spend an hour or so later on making one based on their concept.
Stuart Holding
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
- 69S4
- Coveted Fifth Gear
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I converted my street S4 to alternator when I put it back on the road a few years ago, and from discussions on the forum I opted for the strong bracket then - been happy with it so far (though only about 30 hours use, 40 tops). So I got the same kind for the white one I'm restoring, but unfortunately the parts are now stashed and it may take hours if not days to locate it for taking measurements... I understand mine is a Ford cast part, there are more or less equivalent repros out there (possibly event better)
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nmauduit - Coveted Fifth Gear
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Attaches to one of the timing cover through bolts. There's also a load spreader plate that links the three bolts on the timing cover in that area, as known for it to snap one off with out the plate.
'73 +2 130/5 RHD, now on the road and very slowly rolling though a "restoration"
- mbell
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When I fitted an alternator to my S2 I used the original dynamo bracket. The front lug of the original bracket my have needed a washer as a shim but other wise the pulleys lined up-then I put a brace from the front of the alternator bolt to a timing cover bolt. It is very firm and hasn't needed adjusting in thousands of miles.
'65 S2 4844
- Davidb
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mbell wrote:Attaches to one of the timing cover through bolts. There's also a load spreader plate that links the three bolts on the timing cover in that area, as known for it to snap one off with out the plate.
I'm surprised you'd want to spread load from what looks like a fairly robust mounting area on the block into a fragile alloy component - even with the load spreader plate. But then I'm not I'm an engineer so what do I know.
I did hope I might be able to do a direct swap and use the dynamo bracket directly but there was no way the alternator (45ACR) would fit. Not only were the bracket 'ears' in the wrong place fore and aft, they needed to come out further from the block otherwise the alternator wouldn't swing inwards enough to get the fan belt on. A bigger fan belt had it swinging so far out it hit the chassis. That's when I started cutting and welding.
Stuart Holding
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
- 69S4
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Gustafson Specialty, the same company that converts Nissan geared starters to fit the Twin Cam, also has a complete alternator conversion kit for the Elan.
http://gustafsonspecialty.com/welcome2.html
Regards,
Tim Engel
http://gustafsonspecialty.com/welcome2.html
Regards,
Tim Engel
- Esprit2
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Their mounting bracket looks exactly like what I modified the dynamo bracket into but with the block mounting holes further to the rear. The dynamo bracket is too short to drill further back and it?s going to be easier to start from scratch than modify it again. Knowing where the mounting holes are in relation to the ?ears? would save a lot of trial and error. Anyone got one they could measure? All of that assumes that alternators are much of a muchness in terms of size, something I suspect isn?t the case.
Stuart Holding
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
Thame UK / Alpe D'Huez France
69 S4 FHC
Honda GoldWing 1800
Honda CBX1000
Kawasaki H1 500
Yamaha XS2
- 69S4
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- Posts: 1347
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I have a non OE bracket, from Sjsportscars I think... Just in the process of fitting this today.. hopefully starting the engine later.
Pictures to follow
Pictures to follow
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
- wotsisname
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This is a RHD, +2. PO had used the OE dynamo bracket with modified lower bolt.
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
- wotsisname
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Apologies, pictures aren't the best... Using a phone (quicker). Another picture of the lower bracket and the upper brackets for completeness.. the lower bracket is probably a lot easier to fabricate than the others shown... I have no idea on reliability of these.
HTH
Adrian
HTH
Adrian
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
- wotsisname
- Third Gear
- Posts: 487
- Joined: 24 Jun 2015
I have an old Lucas 15ACR (TR5/GT6 ?) And a modern 17ACR equivalent on my bench. The lower mounting brackets are certainly a different spacing... Approx 6mm wider for the modern unit. I guess the split tube in the rear mounting would take some of that but assume a packing piece would be a better idea.
1968 Elan plus 2 - project
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
2007 Elise S2 [modified with a Hethel 70th sticker (yellow)]
2000 Elise S1 - Sold
- wotsisname
- Third Gear
- Posts: 487
- Joined: 24 Jun 2015
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