#
It is currently Sat Nov 22, 2014 3:30 am


Post a new topicPost a reply Page 1 of 1   [ 9 posts ]
Author Message
 Post subject: 4M Emissions Delete and Carb Options
PostPosted: Tue Jul 31, 2012 9:06 am 
User avatar

Joined: Tue Jun 28, 2011 2:11 pm
Posts: 154
Location: Murray, UT
I have a 4M in my 73 Corona MarkII and it runs well with the stock carb. I would like to clean things up a bit and simplify the engine bay. I have found a little info on JNC on removing the emissions vacuum tubes and the "evap. emissions control device" box. What can be disconnected entirely and what needs to be capped/rerouted etc? I have heard that the dist. advance and brake booster is all that needs to remain. I don't need to pass any emissions standards anymore. My plan was to remove one at a time to make sure that it did not effect the car but any other info would be appreciated. Thanks!

Image

Also, just curious, what carb settups have been done successfully to a 4M? I have a Weber that I may put in at one point but has anyone heard of adapting side drafts maybe? The engine has plenty of life left in it so I don't have a swap planned for the near future.





.

_________________
72 Datsun 510 Ragtop Goon | 73 Toyota Corona Mark II Wagon | 71 Toyota Hilux (sold)
Image


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Tue Jul 31, 2012 1:11 pm 

Joined: Thu Jun 14, 2012 9:43 am
Posts: 73
Location:       
I have a 1979 4M emissions manual for U.S. and Canada that's yours for the price of postage if you want it.


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Tue Jul 31, 2012 9:58 pm 

Joined: Sat Oct 22, 2011 8:25 pm
Posts: 174
Location: Alberta
palatine wrote:
I have a 1979 4M emissions manual for U.S. and Canada that's yours for the price of postage if you want it.

That won't be the same emissions system, there are a few different pieces. However, I might be able to use it for my Cressida. PM sent


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 8:39 am 
User avatar

Joined: Tue Jun 28, 2011 2:11 pm
Posts: 154
Location: Murray, UT
^^ I was a little worried about that too. Lots of things changed in those 6 years. Hope you can use it. Thanks!

_________________
72 Datsun 510 Ragtop Goon | 73 Toyota Corona Mark II Wagon | 71 Toyota Hilux (sold)
Image


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 8:53 am 

Joined: Sat Oct 22, 2011 8:25 pm
Posts: 174
Location: Alberta
Yeah, just for an example, my system doesn't even have that box. I'm even somewhat worried that the 790 book won't be exactly right for my 78 since I believe all 79s were fuel injected and I'm running a carb


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 9:25 am 
User avatar

Joined: Tue Dec 07, 2010 8:10 am
Posts: 216
Location: Houston, TX
I'm assuming you saw what jzcelica did to mine in his old thread, right? viewtopic.php?f=9&t=13570

_________________
Image


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 10:23 am 
User avatar

Joined: Tue Jun 28, 2011 2:11 pm
Posts: 154
Location: Murray, UT
Yep, I referenced that. Thought about asking him directly too. I know he removed it but just wanted to make sure there weren't complications since I will be keeping the stock carb for at least a little bit.

_________________
72 Datsun 510 Ragtop Goon | 73 Toyota Corona Mark II Wagon | 71 Toyota Hilux (sold)
Image


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 12:35 pm 

Joined: Sat Oct 22, 2011 8:25 pm
Posts: 174
Location: Alberta
I think you should be fine so long as you, of course, plug the vacuum ports. I'm pretty sure he threw a weber on at the same time as his de-smog work.


Top
 Profile  
 
 Post subject: Re: 4M Emissions Delete and Carb Options
PostPosted: Wed Aug 01, 2012 4:17 pm 

Joined: Thu Jun 14, 2012 9:43 am
Posts: 73
Location:       
stefman454 wrote:
Yeah, just for an example, my system doesn't even have that box. I'm even somewhat worried that the 790 book won't be exactly right for my 78 since I believe all 79s were fuel injected and I'm running a carb


True, that. Well, it's still yours if you like, and toydatto: I've also got a '76 all models emissions manual that's the same offer to you if you like. A few years closer anyway. I've got to thin down my parts boxes and I'd rather these get to someone who needs them on JNC. PM if interested.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post a new topicPost a reply Page 1 of 1   [ 9 posts ]


Who is online

Users browsing this forum: No registered users and 6 guests


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:  


Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
610nm Style by Daniel St. Jules of Gamexe.net