Locking VTEC on the high lobe questions
10-24-2013, 09:51 PM
#51
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Re: Locking VTEC on the high lobe questions
would like to know more about this. Think its a great concept for drag cars and also being able to run almost any cam on the market and not just limited to a cam in a vtec killer kit.
James did you state on your website you had a write up about this or tech document at one time?
James did you state on your website you had a write up about this or tech document at one time?
10-25-2013, 04:08 PM
#52
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Re: Locking VTEC on the high lobe questions
I was thinking about doing this with some WEB cams, i asked my tuner about doing this before I went to tune my car and this is what he sais.
"Nothing to be gained and you'll wear the rockers and cams out much quicker if locked in vtec. Keep the rockers working normal."
Needless to say I did not do it...
"Nothing to be gained and you'll wear the rockers and cams out much quicker if locked in vtec. Keep the rockers working normal."
Needless to say I did not do it...
10-26-2013, 03:44 PM
#53
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Re: Locking VTEC on the high lobe questions
I really don't see much of a difference on a mechanical part. So its locked in vtec using the vtec lobe shouldn't do any more wear and tear? Valve train is rated to handle the pressure for vtec lobe, low rpm shouldn't put much more stress on them then high rpm. I personally would like to use the cams full lift throughout the power band and gain more oil pressure. In a full drag car the feature of vtec is not needed and my car isn't going on the street.
I would like to know why the Lost motion Assembly is removed?
I would like to know why the Lost motion Assembly is removed?
10-26-2013, 05:12 PM
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Re: Locking VTEC on the high lobe questions
Makes sense I forgot its not used when locked. I haven't taken apart or put together a cylinder head in some time now.
Last edited by K20EF8Dx; 10-27-2013 at 05:33 PM.
03-23-2014, 12:34 PM
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Re: Locking VTEC on the high lobe questions
If you swap the pins it only locks one valve to the vtec lobe. Of the three parts to the rocker arm assmebly the middle has a pin, one of the ends has a pin and the other end has a sprung pin that receives the other two when oil pressure is applied to the far side. If you want to lock all three in take the non sprung side pin out and insert a small ball bearing in there and then reassemble the rocker assmebly and both valves would be locked in mechanically instead of with oil pressure. You would then have to adjust your valves to the middle rocker. Depending on the cam profile it should keep the end rocker pads from contacting the cam and wearing any more, if your middle one will start wearing you'd just have to try it out and see. Shouldn't need your lma's anymore either.
Do I need to swap the pins and use the ball bearing or just the ball bearing?
Thanks in advance
03-23-2014, 01:02 PM
#59
Re: Locking VTEC on the high lobe questions
THIS IS WHAT YOU NEED http://speedfactoryracing.net/collec...honda-b-series
03-23-2014, 02:53 PM
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Re: Locking VTEC on the high lobe questions
THIS IS WHAT YOU NEED http://speedfactoryracing.net/collec...honda-b-series
03-24-2014, 07:20 AM
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Re: Locking VTEC on the high lobe questions
^ same thing i'm pondering, buy the SF kit or do the BB. I think even originally SF did the bb in one of their early posts. Just curious to see if they ran into any issues using the bb and changed to the single ti rod.
03-24-2014, 10:11 AM
#62
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Re: Locking VTEC on the high lobe questions
I spent 2$ on some tiny washers and nuts to stack. I slid the vtec rocker pin over into the feeder rocker arm and then my 2 washers and a nut went into the vtec rocker and then the shorter pin was inserted to sandwich the washers and nut and then IT slid into the spring loaded rocker.
LOL ...and thennnnnnnnnnnnn
LOL ...and thennnnnnnnnnnnn
03-24-2014, 12:49 PM
#63
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Re: Locking VTEC on the high lobe questions
I'm making a block off plate for my solenoid location. Going to be out of billet 6061.
I can make a couple extra if anyone is intrested. Pm me.
I can make a couple extra if anyone is intrested. Pm me.
03-25-2014, 05:25 AM
#64
Re: Locking VTEC on the high lobe questions
I spent 2$ on some tiny washers and nuts to stack. I slid the vtec rocker pin over into the feeder rocker arm and then my 2 washers and a nut went into the vtec rocker and then the shorter pin was inserted to sandwich the washers and nut and then IT slid into the spring loaded rocker.
LOL ...and thennnnnnnnnnnnn
LOL ...and thennnnnnnnnnnnn
03-25-2014, 03:57 PM
#66
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03-25-2014, 09:22 PM
#67
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Re: Locking VTEC on the high lobe questions
You can just space the pins with a BB or washers if you like, but you are just adding even more weight to your valvetrain that way. The Ti pins are 37% lighter than the stock pins alone. We also choose to still run the LMA's in our cars to act as a "helper spring", you can remove them if you like.
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