Z320 Posted May 8, 2020 Author Report Share Posted May 8, 2020 (edited) result: OK, means: weak the bell is very slightly bended or not exactly drilled, not exact enough for a template, the scale I used is another thing... Flywheel off, will check the distances on the engine Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 9, 2020 Report Share Posted May 9, 2020 I think the overall spigot length of the input shaft changed between 4 and 6 cylinder TR. Peter W Quote Link to post Share on other sites
Z320 Posted May 10, 2020 Author Report Share Posted May 10, 2020 On 5/9/2020 at 9:39 AM, BlueTR3A-5EKT said: I think the overall spigot length of the input shaft changed between 4 and 6 cylinder TR. Peter W Thanks, that explains the different lengths shown on the manual and found on my gearbox Quote Link to post Share on other sites
Z320 Posted May 10, 2020 Author Report Share Posted May 10, 2020 (edited) better to do it this way during next week I do the MX-5 housing Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
trevor Posted May 13, 2020 Report Share Posted May 13, 2020 The reason I said this is because I've been trying to get a drive for a Brantz trip meter and the pulses from the drive don't work till later models. Quote Link to post Share on other sites
Z320 Posted May 30, 2020 Author Report Share Posted May 30, 2020 (edited) Hi, before I go on with this I thought it would be a good idea to check if this fits in here without grinding anywhere first "problem", gearbox touches the TR frame, I know, this part of the gearbox I have to cut off solved for the moment, "frame" is off now Ok, an adator plate is needed on my 4A anyway, the GB fits not direct on the TR6 steel plate in this position the flywheel touches here this is the original clutch mechanism, fixed for the moment with threaded bars, but there no space for that in the TR, an idea will come.... other side, here the electric starter has to be, I guess a space saving hight torque starter will be a good way to go Well, I'm pleased, this could work, only needs some time and patience. Ciao, Marco Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
Waldi Posted May 31, 2020 Report Share Posted May 31, 2020 Go for it Marco! Quote Link to post Share on other sites
Z320 Posted June 5, 2020 Author Report Share Posted June 5, 2020 (edited) tomorrow I will pick up the MX5 dimensions Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
Z320 Posted June 6, 2020 Author Report Share Posted June 6, 2020 (edited) Ok, picked up all dimensions (sorry for the blurred photo because of resposibility) Drawing is also ready, it's a CAD 1:1 dwg ready for laser cutting I ordered online, that was surprising easy and a 5 minutes job, delivery is withhin 2 weeks. Because of a minimum order value I had to take 3 of them, price drops rapidly ordering not 1 but 3 or 5. So if it fits and there is any interest for one of them for your own DIY project, please let me know. Price is affordable. Ciao, Marco Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
Z320 Posted June 8, 2020 Author Report Share Posted June 8, 2020 (edited) Ups! I gave the order for the adaptor plates without checking if the MX5 gearbox shaft will be deep enough in the splines of the new friction plate! And without picking up the dimesions of the new spigot bush! Well, with some luck this will fit. Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
PhilipB Posted June 10, 2020 Report Share Posted June 10, 2020 On 5/13/2020 at 5:25 PM, trevor said: The reason I said this is because I've been trying to get a drive for a Brantz trip meter and the pulses from the drive don't work till later models. Trevor Brantz do a pulse generator that plugs into the back of the speedo and then you plug the cable into the sensor https://www.brantz.co.uk/product-page/smiths-jaeger-sensor-m12-fitting-square-drive-pin-brm12 Was this what you were looking for? As far as I'm aware it's only Brantz that sells it, I haven't seen it stocked anywhere else Phil Quote Link to post Share on other sites
trevor Posted June 14, 2020 Report Share Posted June 14, 2020 Thanks Philip but these are only any good for Mk1 or NA as they are known, I tried the electronic board one but failed to find the correct pulses at the speedo head even with help from Brantz finally went for a Satellite one for the Mazda still use the display on my cable sensor in the TR. Trevor Quote Link to post Share on other sites
Z320 Posted June 14, 2020 Author Report Share Posted June 14, 2020 ...silence... "Are any Mazda drivers here today!?" Quote Link to post Share on other sites
Z320 Posted June 16, 2020 Author Report Share Posted June 16, 2020 (edited) Hi, the internet is my friend and while I'm waiting for the adaptors I ordered the friction plate. No Borg+Beck but quality badge and mostly the same, fits the 215/150 mm TR clutch cover and the 22 teeth MX-5 gearbox shaft without any modification. For affortable 50 Euro inkl shipping it was mine. Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
Z320 Posted June 19, 2020 Author Report Share Posted June 19, 2020 (edited) Ups, the adaptors are already delivered, I'm really surprised about the laser cut surface! Tomorrow will be first fit, please keep fingers crossed for me. Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
JochemsTR Posted June 19, 2020 Report Share Posted June 19, 2020 51 minutes ago, Z320 said: Tomorrow will be first fit, please keep fingers crossed for me. will do !! Quote Link to post Share on other sites
Z320 Posted June 19, 2020 Author Report Share Posted June 19, 2020 Thanks! Quote Link to post Share on other sites
AndyR100 Posted June 19, 2020 Report Share Posted June 19, 2020 3 hours ago, Z320 said: Ups, the adaptors are already delivered, I'm really surprised about the laser cut surface! Tomorrow will be first fit, please keep fingers crossed for me. Hey Marco, great to see this coming together for you, i will also have fingers crossed for your first-fit - big thumbs-up from me. ......Andy Quote Link to post Share on other sites
Hamish Posted June 19, 2020 Report Share Posted June 19, 2020 From me too Quote Link to post Share on other sites
Z320 Posted June 20, 2020 Author Report Share Posted June 20, 2020 (edited) Thank you all for finger crossing, things worked VERY well! All drills of the adaptor plates are laser cut 8.0 mm in diameter, this is tight for a 5/16" bolt! Anyway all bolts fit without any problem with the adaptor on the gearbox. With the adaptor on the engine its tight for 3 of them, I guess they will run better by drilling them 8.1 mm - or I use a file. Also both dowels (black permanent marker) are exactly where they have to be, the 8.0 drills I drilled 9.5 mm, this fits but does not go in, so next I drill them 9.6 mm or ream them. Ciao, Marco Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
Waldi Posted June 21, 2020 Report Share Posted June 21, 2020 That seems to be very precise Marco. I don’t think 0.1 mm would be a concern, but you could take 0.05 mm from the opposite sided holes to shift the ring to (maybe?) spread the off-set. I think I would just do as you describe. Viel Spass, Waldi Quote Link to post Share on other sites
Z320 Posted June 21, 2020 Author Report Share Posted June 21, 2020 Hi Waldi, tomorrow I will buy the suitable 9.6 mm drill and first make the both dowels to go through the adapter, than I will see which of the other drills have to move. Ciao, Marco Quote Link to post Share on other sites
JochemsTR Posted June 22, 2020 Report Share Posted June 22, 2020 On 6/21/2020 at 12:06 AM, Z320 said: Anyway all bolts fit without any problem with the adaptor on the gearbox. I thought the adapterplate is there to fit the MX5 Gearbox to the TR4/6 engine? Or did I miss something? Jochem Quote Link to post Share on other sites
Z320 Posted June 22, 2020 Author Report Share Posted June 22, 2020 (edited) Hi Jochem, you are absolutely right! You know I own a 4 cylinder, and on this the lower 4 drills are not bolted on the engine, they only hold a cover made of steel sheet. You can see that on the second photo. So sadly my only master to check the correct position of this 4 drills is this empty TR gearbox. And sadly my gearbox was the only way for me the pick up the dimensions, so this is pretty "wrong". But our mate Wolfgang offered me to support me with a TR6 engine plate to check this more precise. Ciao, Marco Edited June 22, 2020 by Z320 Quote Link to post Share on other sites
Z320 Posted July 1, 2020 Author Report Share Posted July 1, 2020 (edited) This might look painful, but once picked up it was no problem to "adjust" all drills. Now it fits with dowels and bolts on Wolfgang's engine plate, this goes back tomorrow at the Stammtisch ready for flat countersunk drilling like this Edited July 21, 2020 by Z320 external photo storage Quote Link to post Share on other sites
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