LOGIE Posted June 4, 2013 Share Posted June 4, 2013 I have 2 basic questions which ive searched but to no avail 1) When fitting the flywheel and spacers do I need to use some sort of thread lock on the 8 small bolts? Ive only ever fitted a flywheel to a HGV engine YEARS ago and it had wire to feed through each bolt. 2) There are 6 bolts to secure the flywheel to the torque converter, 5 bolts are the same 1 bolt is slightly different (different part number) however the holes in the TC all look the same does it matter where the "1" different bolt goes? I hope the above is understandable, advice is much appreciated. Quote Link to comment Share on other sites More sharing options...
wile e coyote Posted June 4, 2013 Share Posted June 4, 2013 id be interseted in this also as will be removing some time Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 4, 2013 Share Posted June 4, 2013 I thought all the bolts were the same, the new bolts I got with my new TC were anyway. Quote Link to comment Share on other sites More sharing options...
LOGIE Posted June 4, 2013 Author Share Posted June 4, 2013 I thought all the bolts were the same, the new bolts I got with my new TC were anyway.I thought the same also but I bought new from MrT and there are 5 "bolt, washer based (90105-10340)2 and 1 "bolt, flange (90105-10547)" all look the same but its 1 black others are silver. Im hoping the likes of Chris Wilson or Lee P will clarify. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 4, 2013 Share Posted June 4, 2013 I thought the same also but I bought new from MrT and there are 5 bolts washer based (90105-10340) and 1 bolt flange 90105-10547) it looks the same but its black others are silver. Im hoping the likes of Chris Wilson or Lee P will clarify. Will be intersting to know, try giving Lee a PM mate. Quote Link to comment Share on other sites More sharing options...
mellonman Posted June 4, 2013 Share Posted June 4, 2013 I thought the same also but I bought new from MrT and there are 5 "bolt, washer based (90105-10340)2 and 1 "bolt, flange (90105-10547)" all look the same but its 1 black others are silver. Im hoping the likes of Chris Wilson or Lee P will clarify. so true i like to only take information from a select few Quote Link to comment Share on other sites More sharing options...
pedrosixfour Posted June 4, 2013 Share Posted June 4, 2013 The single different bolt is hardly so you know when it (the TC/flywheel/engine) has done one full revolution? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 4, 2013 Share Posted June 4, 2013 Ive removed several torque convertors from flex plates and I can honestly say Ive never noticed a difference in bolt lengths. The only thing I can think is maybe its to do with balance, and that would require the whole assembly to be spun up and balanced first. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2013 Share Posted June 4, 2013 They are all the same on OE strip downs I have done. You don't need Loctite, if torqued to spec, but low strength Loctite won't do any harm. You do know you MUST have the TC inside the gearbox bellhousing, and the flex plate (it's not called a not a flywheel), already bolted to the engine, when you refit the gearbox, don't you? Lots do this wrong and do lots of damage. Likewise, the TC is unbolted from the flex plate *BEFORE* the gearbox is removed, and the TC stays inside the nose of the gearbox. Quote Link to comment Share on other sites More sharing options...
LOGIE Posted June 4, 2013 Author Share Posted June 4, 2013 (edited) They are all the same on OE strip downs I have done. You don't need Loctite, if torqued to spec, but low strength Loctite won't do any harm. You do know you MUST have the TC inside the gearbox bellhousing, and the flex plate (it's not called a not a flywheel), already bolted to the engine, when you refit the gearbox, don't you? Lots do this wrong and do lots of damage. Likewise, the TC is unbolted from the flex plate *BEFORE* the gearbox is removed, and the TC stays inside the nose of the gearbox.Sorry if my explanation is poor, I was meaning the 8 crank bolts that go through flexi and spacers for Loctite. Yep I will ALWAYS support the TC and keep it securely in the bellhousing and torque up through the small inspection hole, I just could not work out why 1 flexi to TC bolt is different to the other 5 does it go in anywhere? there is no markings on the TC to indicate it has to go anywhere specific(all look the same length, just colour is different.) Sorry if all this sounds as if im being anal but I am a perfectionist (as far as funds allow) Edited June 4, 2013 by LOGIE (see edit history) Quote Link to comment Share on other sites More sharing options...
LOGIE Posted June 4, 2013 Author Share Posted June 4, 2013 this might help to members of toyoDIY http://www.toyodiy.com/parts/p_J_1996_TOYOTA_SUPRA_JZA80-ALPVZ_3502.html Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 4, 2013 Share Posted June 4, 2013 While on the subject is there a specific way of making sure the holes line up on the flex plate and TC when bolting the transmission to the engine? When I put mine on the holes were out of line after loosly fitting the box so I had to fiddle about trying to turn the TC behind the flex plate through the inspection hole. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2013 Share Posted June 4, 2013 While on the subject is there a specific way of making sure the holes line up on the flex plate and TC when bolting the transmission to the engine? When I put mine on the holes were out of line after loosly fitting the box so I had to fiddle about trying to turn the TC behind the flex plate through the inspection hole. Push the TC right into the gearbox and it will turn separate from the flex plate until the holes line up. This is normal with all auto boxes. Be sure the TC is right into the box before lifting the box into place, and the drive dogs for the gearbox oil pump are engaged. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2013 Share Posted June 4, 2013 Sorry if my explanation is poor, I was meaning the 8 crank bolts that go through flexi and spacers for Loctite. Yep I will ALWAYS support the TC and keep it securely in the bellhousing and torque up through the small inspection hole, I just could not work out why 1 flexi to TC bolt is different to the other 5 does it go in anywhere? there is no markings on the TC to indicate it has to go anywhere specific(all look the same length, just colour is different.) Sorry if all this sounds as if im being anal but I am a perfectionist (as far as funds allow) Sounds like Toyota changed supplier at some time, so long as they are identical in all respects including weight I guess the colour doesn't matter. (Unless you are REALLY anal.... ) Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 4, 2013 Share Posted June 4, 2013 Push the TC right into the gearbox and it will turn separate from the flex plate until the holes line up. This is normal with all auto boxes. Be sure the TC is right into the box before lifting the box into place, and the drive dogs for the gearbox oil pump are engaged. Yeah this is what I had done but it seems a bit of a challenge turning the TC with the tips of my fingers with the flexi plate in the way. I suppose an option will be to make sure the holes are roughly in the same place before bolting the gearbox on. Quote Link to comment Share on other sites More sharing options...
garethr Posted June 4, 2013 Share Posted June 4, 2013 (edited) The EPC says: 32101A BOLT(FOR DRIVE PLATE & TORQUE CONVERTER SETTING) 5 of 90105-10340 10-1.5PX12.8 - 9.8, YELLOW 1 of 90105-10341 10-1.5PX12.8 - 9.7, WHITE There are Japanese characters that Google translated to yellow/white. EDIT: I should have just looked at the EPC for the export model. Google is correct. What do the numbers mean? Is one 0.1mm shorter than the others? Edited June 4, 2013 by garethr (see edit history) Quote Link to comment Share on other sites More sharing options...
chrispot Posted June 4, 2013 Share Posted June 4, 2013 The EPC says: 32101A BOLT(FOR DRIVE PLATE & TORQUE CONVERTER SETTING) 5 of 90105-10340 10-1.5PX12.8 - 9.8, YELLOW 1 of 90105-10341 10-1.5PX12.8 - 9.7, WHITE There are Japanese characters that Google translated to yellow/white. EDIT: I should have just looked at the EPC for the export model. Google is correct. What do the numbers mean? Is one 0.1mm shorter than the others? looks like you could be correct on the length, the other numbers look like the read 10mm x 1.5mm pitch and are grade 12.8 and then the length 9.8/7 mm? on a side note, are they stretch bolts on the flywheel? (not checked the manual torque settings etc) as I done a Vauxhall engine 6 months ago and it had stretch bolts for the flywheel, I no most of the cars I have done in the past have been normal bolts. regards chris Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 4, 2013 Share Posted June 4, 2013 Prehaps the one black bolt is a hardened non stretch bolt for some odd reason. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 4, 2013 Share Posted June 4, 2013 I have two engines in bits here, neither have an odd coloured flywheel bolt and all bolts seem the same length. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted June 4, 2013 Share Posted June 4, 2013 Same as Chris, Ive got 3 torque convertors with bolts in, all the same. Quote Link to comment Share on other sites More sharing options...
LOGIE Posted June 5, 2013 Author Share Posted June 5, 2013 (edited) the bolts in question, also the old ones that came off the flexi/TC are the same. Edited June 5, 2013 by LOGIE (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 5, 2013 Share Posted June 5, 2013 They'll be fine, bang `em in. Quote Link to comment Share on other sites More sharing options...
LOGIE Posted June 5, 2013 Author Share Posted June 5, 2013 They'll be fine, bang `em in.good enough for me. cheers Quote Link to comment Share on other sites More sharing options...
Kaan W Posted June 11, 2013 Share Posted June 11, 2013 I thought I would add to this thread for future reference that I was just reading through the manuals and it says, when installing the toirque converter you must install the Grey bolt first followed by the 5 Black bolts. Dont ask me why but there must be some bizzare reason Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted June 11, 2013 Share Posted June 11, 2013 All I can think of is the black bolt may have a slightly larger and better defined shoulder at the root of the threads under the bolt head, to accurately position the flex plate over the other holes. As I said, I have two engines with auto boxes in bits and both parts bins for the two engines have all black bolts, and neither have been dismantled before. I wouldn't worry about it if it's already together. Quote Link to comment Share on other sites More sharing options...
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