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Helpful ReplyHot!Speedometer issue

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miyagi
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Re: Speedometer issue 2019/02/04 12:53:54 (permalink)
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Hi Pure MR2,
In reply to your question regarding history of gearbox Turbo E153 with speedometer issue having blue coloured plastic speed differential gear.
 
Obtained assistance from my friend in locating the gearbox number situated under the clutch fork rubber boot indicated S01104255.  Would you be able to provide additional details with the numbers provided.
 
Many thanks and have a great day
 
Miyagi 
#16
TonyMR2
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Re: Speedometer issue 2019/02/04 14:25:31 (permalink)
+1 (1)
I believe I am good with tools, good with engines, family mechanics. I am mid of two gearbox rebuilds (early and late boxes, new synchros, new lsd, bits and pieces), however the work is being done by someone who I hold very high as to having a professional level of knowledge, experience and skill - who also has some of the specialist tools (custom made). Forever grateful.
Personally a professional is worth the expense/importance of a good gearbox.

With the gearbox out you might be able to inspect any broken teeth on the internal ring.

Why I am posting... Remind me / Pm me if I don’t repost, I have both mechanical and speedo drives (different ends from memory), I have both blue (early model box) and white (late model box) speedo rings (from memory they were different diameters/sat on the final drive differently so are not interchangeable). Before cracking the box and starting down the buy parts rabbit hole of rebuild let me check the parts. Again, it’s only from memory, I can check. Otherwise maybe PureMr2 also has a blue ring to compare size to. If these are different then might be another issue you have.
post edited by TonyMR2 - 2019/02/04 15:00:29
#17
miyagi
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Re: Speedometer issue 2019/02/04 15:38:43 (permalink)
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Tony MR2,
I trust you are in great health and spirit.  I sincerely appreciate your interest and guidance.  I would like to PM you however not familiar on how to do it (is it through Facebook).
 
After an extensive search of the blue plastic differential gear part # 334181-17010 (confirmed to be a discontinued component) worldwide including USA, Canada, Japan, Australia and Russia.  I was introduced to a Japan Auction site by a very knowledgeable and trustworthy MR2 enthusiast friend of mine.  Very fortunate for me I managed to win a brand new blue plastic gear matching part #.  Since then I noticed that another gear is now on auction for an additional 7000 yen from a different seller.
 
Thanks to both you and my friend to confirmed that the two gears are of different dimensions.  My friend informed me that the E153 turbo box I have is a November 1990 build, which as you have mentioned blue plastic gear for the earlier model box.  PureMR2 has also kindly assisted however they only have the white gear available at a half the price (great if it was white).
 
Thanks again for your interest.
 
Miyagi       
#18

TonyMR2
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Re: Speedometer issue 2019/02/05 08:46:21 (permalink)
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I checked the mechanical and electronic speedos for consistency in length / speedo gear width and teeth - both being the same only that the electronic speedo gear shaft is longer (longer as in a sitting inside the speedo sender, however depth of the speedo gear inside the box is the same on both). So both mechanical and electronic speedo senders (gears) should not cause any compatibility issues regardless of the inside ring colour.

I couldn’t find the blue ring to compare to the white however from memory different mounting as in can’t be swapped (couldn’t use my old non lsd early model speedo ring with lsd diff - had to buy the white).

Process of elimination, if you have tried, swapping the cluster, swapping the electronic speedo drive unit, tried spinning your speedo drive gear with a drill and output is consistent at a static speed, that would support the look into the gearbox.

But if guidance. Gearbox rebuild parts ordered last year, basics: seals, bearings, square bushing, drain bolts, selector boot (basics to rebuild / refresh, not including any synchros etc) with postage was $300+
post edited by TonyMR2 - 2019/02/05 09:49:52
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TonyMR2
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Re: Speedometer issue 2019/02/05 09:47:01 (permalink)
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#20
JakesSW
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Re: Speedometer issue 2019/09/18 15:51:25 (permalink)
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Edit***Sorry saw it was sorted with the box gear**
Hi guys, long time lurker and hate to resurrect an old post. I recently got to the bottom of this issue on my 93 NA. Turns out the soldering at the back of the speedo cluster was at fault. I resoldered everything in site and it came good.

Was a last ditch attempt in frustration after changing capacitors and still having the needle fluctuate like mad.

Works perfect now. Looked at each connection with a magnifying glass and found nothing. So a hairline crack may have been the culprit.

Sent from my SM-G960F using Tapatalk


#21
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