lough90 Posted November 6, 2010 Report Share Posted November 6, 2010 Anyone got any advice or recommendations regarding high torque starter motors, best place to buy or manufacture Any advice is welcomed Richard Quote Link to post Share on other sites
Tr4Tony Posted November 6, 2010 Report Share Posted November 6, 2010 Hi The Bastuck version of the hi speed starter is the best value around i think, and they now come with the integral bottom bolt (which is the hard one to get in, particularly if you have a performace exhaust system). Plenty others around but they are all basically the same and you just pay more money for labelling. I use one of these on BST82B and if it can crank over that engine reliably then it will do pretty much any other Im sure. Regards Tony Quote Link to post Share on other sites
badshead Posted November 6, 2010 Report Share Posted November 6, 2010 Wosp and Edge and common brands supplied in the UK - TR Shop supply the former and places like Cambridge Motorsports the latter. Personally I prefer the ones without the fixed top stud as they're a pain to fit given restricted access with the gearbox tunnel fitted. I've got a Wosp fitted to my TR4A, does the job very well but sounds horrible (also has the top stud, so pain to fit). I've also got one on my TR6 supplied by SC Parts, can't remember the brand other than it's basically a Nippon Denso unit (standard equipment on many cars) but it has two bolt holes like the original starter so dead easy to fit, sounds better too. Quote Link to post Share on other sites
Badfrog Posted November 7, 2010 Report Share Posted November 7, 2010 They're all the same, with a specific plate for each car. Hi-torque is BS: it's just a 6V engine boosted by being used at 12V. Their only good points are lightness (5 lbs) and reliability. Bad point: they keep loosening off until you mount them with nylstops and red loctite. Badfrog Quote Link to post Share on other sites
EdwinTiben Posted November 7, 2010 Report Share Posted November 7, 2010 (edited) Hi, Bought several starters from http://www.britishstarters.com/Triumph.html Running great, good fitting with a machined mountingplate which can be fitted in different angles. Last time i ordered more in one order for some friends and myself, which reduced the price and shipmentcosts. Edited November 7, 2010 by EdwinTiben Quote Link to post Share on other sites
ianc Posted November 7, 2010 Report Share Posted November 7, 2010 Badfrog: the point is that the motor drives through a reduction gear, so the motor can spin much faster and draw a lower current than the original, direct-drive beast. On winter days, the original motor is virtually a short-circuit on the battery because it never spins fast enough to generate any appreciable "back e.m.f.". Ian Cornish Quote Link to post Share on other sites
Tony Millward Posted November 7, 2010 Report Share Posted November 7, 2010 I fitted the Wosp unit from the TR Shop. It has an integral lower bolt but not a top bolt. I also used Nyloc nuts. It turns my engine over quite fast which I like.... Cheers Tony Quote Link to post Share on other sites
peejay4A Posted November 7, 2010 Report Share Posted November 7, 2010 Is it correct that one should reverse the ring gear on the flywheel because the high torque motor engages from the front rather than the rear? Quote Link to post Share on other sites
Badfrog Posted November 7, 2010 Report Share Posted November 7, 2010 Badfrog: the point is that the motor drives through a reduction gear, so the motor can spin much faster and draw a lower current than the original, direct-drive beast. On winter days, the original motor is virtually a short-circuit on the battery because it never spins fast enough to generate any appreciable "back e.m.f.". Ian Cornish Hi Ian, That's what I thought originally but I really can't figure where the gear combo is. My unit is very small and is obviously a direct drive. Then I got this explanation about the electrical boost from another source (web mechanics forum) and I didn't push the investigation any further. Could it be that both contraptions exist? One with the gears, one with the electrical boost? I'm game for any detailed info. Cheers, Badfrog Quote Link to post Share on other sites
Ashley James Posted November 7, 2010 Report Share Posted November 7, 2010 I believe that geared starter motors are pretty much the standard now and on everything modern. There are several companies specialising in selling very high quality ones that can be retrofitted to classic cars. I discovered this after I'd paid about twice their average cost to have a special pre-engaged one based on something from a Marina made for my Bristol 400. My TR3A has a geared and pre-engaged motor on it. Ash Quote Link to post Share on other sites
RogerH Posted November 7, 2010 Report Share Posted November 7, 2010 Pete, in the perfect world reversing the ring gear may be a good idea but in reality it all works OK (sort of). The original motor does sound better (solid Triumph/Lucas engineering), the new HT motors sound tinny/insubstantial. Roger Quote Link to post Share on other sites
ianc Posted November 7, 2010 Report Share Posted November 7, 2010 Because these "high torque" motors engage the pinion BEFORE energising the starter motor, I don't think it is necessary to do anything about the ring gear. As far as I am aware, all the current offerings will pre-engage the pinion and are internally geared. I wouldn't say that my motor sounds "tinny", but perhaps other motors may sound that way. Ian Cornish Quote Link to post Share on other sites
KnightsT Posted November 7, 2010 Report Share Posted November 7, 2010 (edited) I have a Wosp version - very happy with its performance, but I found that the captive bolt mentioned above was 10mm too long and so the rear of the motor fouled my exhaust when trying to remove it with the exhaust wrapped and fitted - removing this amount left enough for a spring washer/nut or washer/nyloc combo, but crucially allowed to to be removed with a Phoenix exhaust system, so whichever one you buy shorten this captive bolt as much as you can before fitting it. Mick Edited November 7, 2010 by KnightsT Quote Link to post Share on other sites
Guest ntc Posted November 7, 2010 Report Share Posted November 7, 2010 There are two type's to suit the ring gear/flywheel . Get it right bolt on or not Quote Link to post Share on other sites
peejay4A Posted November 7, 2010 Report Share Posted November 7, 2010 There are two type's to suit the ring gear/flywheel . Get it right bolt on or not So do I understand that there's a different version of the geared starter motor for shrunk on ring gear as opposed to bolt on? Is that something to do with the pitch of the gear teeth? Quote Link to post Share on other sites
BrianC Posted November 7, 2010 Report Share Posted November 7, 2010 Different number of teeth (90 or 91, I think) and leading or trailing chamfers depending on early or late (bomb or long type) starter as original fitment. As Neil says, do not get that part wrong! Quote Link to post Share on other sites
vivdownunder Posted November 9, 2010 Report Share Posted November 9, 2010 There's only the one model Hi Torque starter for TR4/4A cars, as all had 90 tooth bolt on ring gears. (only the flywheels differed for the two clutches) It replaces Lucas starter motor p/n 25550. The other model Hi Torque starter is for TR2/3/3A cars before TS50000 with 91 tooth shrink on ring gears and Lucas Starter p/n 25541. Hi Torque starters from various makers can fully or only partially engage with the ring gear. Measure for full engagement before fitting, as inferior meshing often results in early starter failure. Viv. Quote Link to post Share on other sites
peejay4A Posted November 9, 2010 Report Share Posted November 9, 2010 Thanks for that Viv. Nice to know I only need to specify one for 4/4A. I think I'll reverse the ring gear on the flywheel too - although if I do that will the lead in taper on the teeth be on the wrong side to assist in meshing? Quote Link to post Share on other sites
Guest ntc Posted November 9, 2010 Report Share Posted November 9, 2010 Check the flywheel Quote Link to post Share on other sites
peejay4A Posted November 9, 2010 Report Share Posted November 9, 2010 Check the flywheel Yup, I have the flywheel. It has a bolted on ring gear with the lead in on the back to accommodate the inertia starter. So should I reverse it for a geared starter? Quote Link to post Share on other sites
Guest ntc Posted November 9, 2010 Report Share Posted November 9, 2010 Yup, I have the flywheel. It has a bolted on ring gear with the lead in on the back to accommodate the inertia starter. So should I reverse it for a geared starter? No need Quote Link to post Share on other sites
peejay4A Posted November 9, 2010 Report Share Posted November 9, 2010 No need Can't do any harm though I suppose as I'll be fitting a new ring gear anyway. Quote Link to post Share on other sites
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