Login   Register

It is currently Thu Oct 30, 2014 10:25 am




Post new topic Reply to topic  [ 7 posts ] 
Author Message
 Post subject: More M40/M41 top plate questions
PostPosted: Thu Mar 04, 2010 4:46 pm 
Offline
Site Member
User avatar

Joined: Thu Feb 19, 2009 10:19 pm
Posts: 462
Location: Lake Oswego, OR
I'm planning my drill strategy now that I have both the M40 and M41 out of their respective cars. I'm switching to an M41, but using the long shifter and top plate from my M40.

Here is a picture of the M40 top plate. Note that the reverse switch doesn't appear on the top plate itself, but to the rear of the main housing on that little shelf.

Image

Next is a picture of the M41 top plate. I've noted what I think are the reverse and overdrive lockout switches.

Image

Finally, a picture of what that little shelf looks like on my M41. It is bare on top, with no switch.

Image

What I'm thinking is that I find a way to remove the reverse switch and shelf from the M40 and bolt it directly on the M41, replacing its bare shelf. Then I simply drill and tap the hole in the M40 top plate for the overdrive switch.

Two questions. Can I convert the M41 to an M40 style reverse switch, which looks much different in size and location to the M41 variant? Second, does that little raised semi-circle I've highlighted on the M40 top plate actually mark the location I should drill, or am I being too optimistic?

_________________
Image


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Sat Mar 06, 2010 12:12 am 
Offline
Site Member
User avatar

Joined: Fri Feb 01, 2008 12:16 am
Posts: 162
Location: Portland, OR
I want to know the answers to these questions too! I will be doing the same thing with my '68 142 this spring...

_________________
'68 142S: stock B18/M40, lowered with full IPD/VPD suspension, Virgos, vintage wood Momo Indy wheel; hoodride/project


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Sun Mar 07, 2010 8:28 pm 
Offline
Site Member
User avatar

Joined: Thu Feb 19, 2009 10:19 pm
Posts: 462
Location: Lake Oswego, OR
crashbox wrote:
I want to know the answers to these questions too! I will be doing the same thing with my '68 142 this spring...


I figured out everything this weekend and it's all good to go. PM me later this spring and I can tell you everything you need to know!

_________________
Image


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Mon Mar 08, 2010 7:58 am 
Offline
Site Member
User avatar

Joined: Mon Mar 07, 2005 4:57 pm
Posts: 7249
Location: SW Portland, OR
drj434343 wrote:
crashbox wrote:
I want to know the answers to these questions too! I will be doing the same thing with my '68 142 this spring...


I figured out everything this weekend and it's all good to go. PM me later this spring and I can tell you everything you need to know!
Butttttt, then all the people who come on here looking for that answer will have to PM you too? lol

_________________
Kyle - '91 244? - '68 142(SOLD!?! :()? - '06 Ninja 250R? - My Galleries?
Image


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Mon Mar 08, 2010 3:47 pm 
Offline
Site Member
User avatar

Joined: Thu Feb 19, 2009 10:19 pm
Posts: 462
Location: Lake Oswego, OR
It makes me feel important when people PM me.

Actually, it didn't seem like there was enough interest to warrant the extra work. However, if Kyle asks, I guess it needs to happen!

The short answer on the reverse switch is yes, they can be readily swapped. The entire aluminum shelf comes off and screws right into the waiting M41. The M41 style reverse switch gets its actuation slightly differently, but can work on an M40 just fine.

The hole for the 4th gear switch does indeed get drilled on the raised pattern I pointed out earlier, but a better indicator is on the underside of the top plate, where you'll see two cups. The less centered of the two cups is the right one, but they're there to give extra wall thickness for threads, otherwise you'd risk stripping out the thin top plate when screwing in a sensor. Simply drill and tap a centered hole right in that cup and you're good to go. No measuring required. I believe the threads were metric size 18.

Image

Image

Image

Image

_________________
Image


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Tue Mar 09, 2010 10:55 am 
Offline
Site Member
User avatar

Joined: Mon Mar 07, 2005 4:57 pm
Posts: 7249
Location: SW Portland, OR
Nice! Now I know for when I one day own a 140 again and want to keep the long shifter. :D Thanks Jason!

I'm surprised about the metric threads though.

_________________
Kyle - '91 244? - '68 142(SOLD!?! :()? - '06 Ninja 250R? - My Galleries?
Image


Top
 Profile  
 
 Post subject: Re: More M40/M41 top plate questions
PostPosted: Tue Mar 09, 2010 12:08 pm 
Offline
Site Member
User avatar

Joined: Thu Feb 19, 2009 10:19 pm
Posts: 462
Location: Lake Oswego, OR
KLR142 wrote:
I'm surprised about the metric threads though.


Me too! Most of the car appears to be US, but there have been a few random things that were metric, this being one of them.

_________________
Image


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

It is currently Thu Oct 30, 2014 10:25 am


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron



Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group  
Design By Poker Bandits