Winston Todge
|
| posted on 10/5/06 at 12:16 PM |
|
|
R1 engine mount thread pitch and size?
Hi all,
Just a quick one...
The three top mounts that the cradle attaches to on the engine are what thread and size?
Having a few problems finding a bolt that will fit. Is it possible to tap to M12 as a better solution as the hole size on the cradle seems to be
M12?
Thanks,
Chris.
|
|
|
|
|
zxrlocost
|
| posted on 10/5/06 at 12:20 PM |
|
|
they are yamaha very fine thread
what year engine is it
my 99 had one either side in the middle area and four at the back two top two bottom
there was four mounts on the cradle altogether in my mk
|
PLEASE NOTE: This user is a trader who has not signed up for the LocostBuilders registration scheme. If this post is advertising a commercial product or service, please report it by clicking here.
|
smart51
|
| posted on 10/5/06 at 12:59 PM |
|
|
My 98 R1 has 3 mounting bolts on the head. M10 x 1.25 and M12 x 1.25 ring a bell (not the most fine nor ordinary but that unusual size in between)
My cradle came with the M12 and M10 tubes on the wrong side so I had to file the 10mm hole out to 12mm. That was a fun job.
|
|
|
locoboy
|
| posted on 10/5/06 at 04:07 PM |
|
|
no 12mm drill bit?
ATB
Locoboy
|
|
|
smart51
|
| posted on 10/5/06 at 05:38 PM |
|
|
My drill has a chuck size of 10mm. My local shop didn't do a 12mm bit with a 10mm shank. I didn't want to buy a new drill. It
didn't take too long to file it out.
|
|
|
Winston Todge
|
| posted on 10/5/06 at 06:09 PM |
|
|
Still a little confused how a M12 fitted into the R1 mounts... ?
Mines a 4XV and I tried an M12 but it seemed to large a pitch...
Do people tap these threads too!?
Chris.
|
|
|
fesycresy
|
| posted on 10/5/06 at 08:49 PM |
|
|
M12 X 1.75 is the standard pitch for M12.
Any less is called metric fine, I think my R1 threads are 1.25.
[Edited on 10/5/06 by fesycresy]
-----------------------------------------------------------------------------------------------------
The sooner you fall behind, the more time you'll have to catch up.
|
|
|
Winston Todge
|
| posted on 11/5/06 at 06:49 AM |
|
|
Aaaahhh...
Sorry, being and eedjit.
Will start looking for some M12 x 1.25.
Ta all,
Chris.
|
|
|
zxrlocost
|
| posted on 11/5/06 at 08:30 AM |
|
|
I did say in the first thread what they were
I have some of both
m10 and m12 you need 1 of each
there 4 quid posted for the two
I have got the most suitable sizes for my cradle so I presume yours will be the same!?
U2U me if you want them
ta chris
|
PLEASE NOTE: This user is a trader who has not signed up for the LocostBuilders registration scheme. If this post is advertising a commercial product or service, please report it by clicking here.
|
RichieC
|
| posted on 12/5/06 at 08:38 PM |
|
|
Hi all,
I have the M10x1.25 and M12x1.25 bolts I got from you zxrlocost, but all 3 mounts on the engine are M10x1.25. There are 2 on the sprocket end of the
engine and 1 on the other
Sounds like the MNR cradle is a bit different to the MK one but do I not need 3 bolts anyway in addition to the threaded bar for the bottom mount?
For fellow MNR owners, only 2 of my mounts on the cradle - 1 on the sprocket end, 1 on the oppositeactually line up with mounts on the engine, is this
correct?
Picture paints a thousand words, looks to me like the wrong cradle.
Sprocket End:
Thanks and rgds
Rich
[Edited on 13/5/06 by RichieC]
 
Rescued attachment Engine Cradle 1.JPG
|
|
|
RichieC
|
| posted on 12/5/06 at 08:38 PM |
|
|
Clutch end:
 
Rescued attachment Engine Cradle 2.JPG
|
|
|
smart51
|
| posted on 12/5/06 at 09:38 PM |
|
|
phone marc and ask him. He may well have sent the wrong one.
|
|
|
RichieC
|
| posted on 12/5/06 at 09:41 PM |
|
|
Yep, thats the plan, Ill wait til the morning though 
Rich
|
|
|
Winston Todge
|
| posted on 12/5/06 at 10:53 PM |
|
|
Does look a little wrong!
Just mounted my engine tonight. I ended up tapping all the threads to M12 x 1.75 and used high tensile M12s. Seems perfect!
Chris.
|
|
|
RichieC
|
| posted on 13/5/06 at 07:10 AM |
|
|
Hi Chris,
I was also thinking about doing that as I only have 1 M10 fine bolt.
You have a 5JJ too dont you? 3 upper bolts?
Thanks
Rich
|
|
|
Winston Todge
|
| posted on 13/5/06 at 09:13 AM |
|
|
I've got the 4XV Richie.
There are three top mounts on my cradle. I'll take a picture tonight and hopefully get to update the build diary at some point too!
Hope all is going well?
Chris.
|
|
|
RichieC
|
| posted on 13/5/06 at 09:16 AM |
|
|
Going pretty well as Im off work for a couple of weeks.
Spoke to Chris this morning and they reckon its a 4XV cradle I have been sent.
Ill post a pic of the mounts on the engine cos they must be fairly different from 4XV to 5JJ.
Kind Rgds
Richie
|
|
|
RichieC
|
| posted on 13/5/06 at 09:29 AM |
|
|
Here are the 3 top engine mounts on the 5JJ, all of which are M10 fine. Do they look radically diferent to the 4XV?
Thanks Rich
 
Rescued attachment Mount1.JPG
|
|
|
RichieC
|
| posted on 13/5/06 at 09:30 AM |
|
|
Other side
 
Rescued attachment Mount 2.JPG
|
|
|
Winston Todge
|
| posted on 13/5/06 at 09:49 AM |
|
|
Hey Richie,
The mounts do look fairly similar to the 4XV from what I can see...
I don't seem to have a piccie of the other side but will look.
Maybe your cradle's from a 5PW??
Chris.
|
|
|
Winston Todge
|
| posted on 13/5/06 at 09:51 AM |
|
|
From those pictures Richie they do look almost exactly the same...
Will check again though.
Chris.
|
|
|
Winston Todge
|
| posted on 13/5/06 at 10:00 AM |
|
|
Hey bud,
Just got your U2U and thought I'd post here for others...
The two smaller M10 mounts did take an M12 x 1.75 tap but you must make sure it is going in perfectly straight as the Ally alloy is fairly soft and
can easily go in lopsided...
The M12 on the other side was a lot easier as the thread pitch was the only difference, not diameter.
As for the tensile strength, I used 8.8s and cut the bolts to length so they didn't bottom out (as you say) in the exhaust port.
Lastly as for the actual figure of tensile strength and whether a looser thread pitch tapped into a tighter thread pitch of the same diameter is
strong enough; the bolts only need to take force in shear and not tension so aslong as suitable torque can be obtained on tightening, then there
should be no problems. You could use 10.9s or 12.9s but IMO I'm sure it's not needed.
Also, Loctite will be needed on these bolts on final positioning.
Marc may have another take on this, but most of this info is taken from him and his Dad...
Chris.
[Edited on 13-5-06 by Winston Todge]
|
|
|
RichieC
|
| posted on 13/5/06 at 10:07 AM |
|
|
Hi Chris, thanks for the reply.
It looks as though the [side you have shown] is the same as the 5JJ. I would have been suprised if it had been to be honest.
This cradle could well be a inj 5PW then, which would make more sense as I know theyre pretty different.
Thanks again, kind rgds
Richie
|
|
|
chockymonster
|
| posted on 13/5/06 at 12:38 PM |
|
|
The 5PW and the 5JJ are different.
I've got a 5PW and marc fitted my engine into the car to make the cradle as they don't have jigs for the 5PW.
Hopefuly that will mean I won't have this problem
|
|
|
Bryan Sears
|
| posted on 14/5/06 at 10:14 PM |
|
|
I had the same problem with the bolts on my 5jj.
After a bit of a head scratch and a few “ You wont get anything like that mate ” from various places.
I finally went to my local Honda dealer and asked them if they had anything likely to fit. One of the mechanics put his hand in his toolbox and came
up with three second-hand Honda engine mounting bolts exactly the right length and pitch.
I had to cut the tubes on the cradle to get it to fit.
|
|
|
.jpg){kind=avatar}
