Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 1st August 2010, 20:36   #1
Awaiting Email Confirmation
 
Join Date: Dec 2008
Location: mUM
Posts: 17
Thanked: Once
Smile Swapping an automatic gearbox in a Honda city type II VTEC

Hi - I have a VTEC OHC which has done 60K. I want to swap the manual gearbox with an automatic one. I want to know the foll things:
1) Can I do the swap?
2) Which auto box should I use - normal automatic gearbox or CVT?
3) DO I need to change the ECU?
4) Where can I get a good auto gearbox in Mumbai?
5) Is there anything I need to take note of b4 I go ahead?

Karthik
KK396 is offline   Reply With Quote
Old 1st August 2010, 22:07   #2
Distinguished - BHPian
 
4x4addict's Avatar
 
Join Date: Nov 2007
Location: Chennai
Posts: 3,974
Thanked: 2,497 Times
Default

@Karthick;

The Automatic Transmission ECU and Engine ECU send signals back and forth. So you will definitely need to alter/change the Engine ECU.

Why in gods name would you ruin a VTEC by making it an Auto? I think it will be much better to sell and get an Auto.
4x4addict is offline   Reply With Quote
Old 1st August 2010, 22:26   #3
Senior - BHPian
 
greenhorn's Avatar
 
Join Date: Apr 2007
Location: TN-14
Posts: 6,837
Thanked: 1,314 Times
Default

IIRC someone here had posted their experience of converting an OHC ( not sure if it was a vtec) to an autobox, and it did not end up good.
greenhorn is online now   Reply With Quote
Old 1st August 2010, 22:49   #4
BHPian
 
anku94's Avatar
 
Join Date: Dec 2009
Location: Bangalore
Posts: 225
Thanked: 27 Times
Default

Not that I have any experience, but I strongly advise against doing so. There are some things that can only be done at the manufacturing level, because of the sheer complexity of the 'thing'.

Things are further complicated in modern cars with their ECUs and sensors. You just can't modify them beyond a limit. All the components are made for each other. A mod of this magnitude will, most likely, be a jugaad.

Your signature says you're procuring a 2009 NHC. Why don't go an extra mile and get an A/T car if that's a must for you ?

If it's just the modding bug itching , I'd suggest you unleash this energy on a mod of less complexity.
anku94 is offline   Reply With Quote
Old 1st August 2010, 23:13   #5
Senior - BHPian
 
pranavt's Avatar
 
Join Date: May 2008
Location: Mumbai
Posts: 1,628
Thanked: 272 Times
Default

Should be easy. Find the corresponding transmission and peripherals and an AT ECU from the City AT. The blocks for both the 1.5 EXI and VTEC are probably the same, so the transmission should bolt up correctly. It will not enable VTEC though, since the CITY AT sold here was a 1.5 EXI. Finally, round it off with the City AT speedo cluster. Find the right garage and it's definitely doable.

Last edited by pranavt : 1st August 2010 at 23:18.
pranavt is offline   Reply With Quote
Old 1st August 2010, 23:17   #6
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 7,839
Thanked: 7,204 Times
Default

Buy the car you want, or be happy with the car you have.

Mods is one thing, turning it into a different car is another.
Thad E Ginathom is offline   Reply With Quote
Old 1st August 2010, 23:19   #7
Senior - BHPian
 
pranavt's Avatar
 
Join Date: May 2008
Location: Mumbai
Posts: 1,628
Thanked: 272 Times
Default

What is so difficult about this? The whole thing will probably be a bolt-on job once he procures the required things.
pranavt is offline   Reply With Quote
Old 1st August 2010, 23:29   #8
Senior - BHPian
 
Join Date: Sep 2006
Location: zxc
Posts: 3,394
Thanked: 658 Times
Default

Quote:
Originally Posted by pranavt View Post
What is so difficult about this? The whole thing will probably be a bolt-on job once he procures the required things.
Thats will be the main problem, isn't it? In a country where we have to wait for weeks for standard parts to arrive.

i will not advice you to do such a swap.

If you are doing this coz you are tired of shifting in city traffic. You can install semi-auto kit. Cheaper and does the job to some extent.
SirAlec is offline   Reply With Quote
Old 2nd August 2010, 00:20   #9
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 7,839
Thanked: 7,204 Times
Default

Quote:
probably be a bolt-on job once he procures the required things.
How many required things? And what tools/kit/workshop facilities would it need? And how much car to take apart to fit/exchange them? And how much will it rattle when it is put back together? And what to do with the left-over bits? And how easy is it to buy the right car in the first place? How many people here routinely take the engine and or the transmission out of their car and put it back again? Handling that kind of stuff is dangerous for a start. I'm assuming that KK396 is not a trained mechanic --- else he probably wouldn't be asking.
Quote:
You can install semi-auto kit. Cheaper and does the job to some extent.
Now... that's a new one on me! what's that?!
Thad E Ginathom is offline   Reply With Quote
Old 2nd August 2010, 01:50   #10
Senior - BHPian
 
pranavt's Avatar
 
Join Date: May 2008
Location: Mumbai
Posts: 1,628
Thanked: 272 Times
Default

Quote:
Originally Posted by Thad E Ginathom View Post
How many required things?
Whatever I have posted in my previous post.

Quote:
And what tools/kit/workshop facilities would it need?
A good garage will have everything. For that matter, any roadside mechanic can open up a transmission. A good one should be able to take apart an automatic transmission if need be. Swapping a transmission wouldn't require opening it.

Quote:
And how much car to take apart to fit/exchange them?
Assuming you meant money, depends on the cost of the parts. Would be less than selling this one and/or buying a new car with an AT gearbox.

Quote:
And how much will it rattle when it is put back together?
If done at a good garage, probably not at all.

Quote:
And what to do with the left-over bits?
That is his problem. Finding a buyer wouldn't be impossible.

Quote:
And how easy is it to buy the right car in the first place?
I believe he already has the car.

Quote:
How many people here routinely take the engine and or the transmission out of their car and put it back again?
Including mechanics, thousands in Mumbai alone.

Quote:
I'm assuming that KK396 is not a trained mechanic --- else he probably wouldn't be asking.
By that logic, everyone on Team BHP who has a good amount of knowledge about cars is a trained mechanic.
pranavt is offline   Reply With Quote
Old 2nd August 2010, 01:59   #11
Distinguished - BHPian
 
Thad E Ginathom's Avatar
 
Join Date: Jun 2007
Location: Chennai
Posts: 7,839
Thanked: 7,204 Times
Default

Quote:
If done at a good garage, probably not at all.
Ahhh... I was, somehow, thinking he intended to do it himself. Sorry if my misunderstanding wasted your time.

I still think it's a bad idea --- but, sure, getting it done by competent mechanics could put a different slant on it.
Thad E Ginathom is offline   Reply With Quote
Old 2nd August 2010, 11:17   #12
BHPian
 
Abes's Avatar
 
Join Date: Jan 2009
Location: Salalah
Posts: 201
Thanked: 57 Times
Default

I have seen people replacing AT with MT, when AT starts having problems. Not seen anyone doing the opposite. Though it might be possible with the right mechanic, as stated by Mr. Thad.
Abes is offline   Reply With Quote
Old 2nd August 2010, 11:57   #13
BHPian
 
rohan_iitr's Avatar
 
Join Date: Feb 2009
Location: Bangalore
Posts: 992
Thanked: 401 Times
Default

I think the thread title is misleading.

I thought that he was trying to replace AT with MT.

Rohan
rohan_iitr is offline   Reply With Quote
Old 2nd August 2010, 12:14   #14
Awaiting Email Confirmation
 
Join Date: Dec 2008
Location: mUM
Posts: 17
Thanked: Once
Default

The OHC is my 2nd car - already got a manual ANHC, which my wife is using and is driven by a driver

Like Pranavt mentioned, cost implication - its cheaper to convert to an auto than buy a new one.
KK396 is offline   Reply With Quote
Old 2nd August 2010, 15:21   #15
Senior - BHPian
 
Join Date: Sep 2006
Location: zxc
Posts: 3,394
Thanked: 658 Times
Default

Quote:
Originally Posted by Thad E Ginathom View Post
Now... that's a new one on me! what's that?!
Semi automatic/auto cutch is a bolt on kit that can be fitted in any vehicle.

I think there is even an Indian manufacturer. I remember seeing one in an auto magazine long ago.


more info
http://semiautomaticar.blogspot.com/

Last edited by SirAlec : 2nd August 2010 at 15:23.
SirAlec is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Honda City, 4th generation i-Vtec - Our 3rd Honda City in 10 years Mevtec Test-Drives & Initial Ownership Reports 11 14th March 2017 08:34
Problematic- 2003 honda city automatic gearbox stormsearcher Technical Stuff 16 8th April 2013 01:56
Max top speeds on Type 2 Honda City VTEC President Technical Stuff 3 11th February 2008 11:21


All times are GMT +5.5. The time now is 18:08.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks