new to the forum need htev help - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 41 Old 10-07-2009, 4:40 PM Thread Starter
 
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new to the forum need htev help

Hi guys I just picked up a 929 and of course the servo gears are stripped...I've been reading on the forum about the hass eliminator. I know a lot of people are saying to keep the servo connected and just disconnect the cables...can I actually remove the entire assembly from the bike or will it affect something if I do. Also is there anything else I have to modify so that the bike runs proper or will it be fine with just the eliminator, I don't really have enough to spend on pc...thanks!
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post #2 of 41 Old 10-07-2009, 5:11 PM
 
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Re: new to the forum need htev help

Hi my bike ate my servo a couple of months back, i ended up taking the valve out of the exhaust, unbolted the plate, nut, bolt, and washers in hole then rebolted plate. straight though exhaust. then removed cables and servo completely. the cable to the flapper in airbox pulled tight to leave open and clamped off in situ. Only difference is you need to get throttle and gears right. front lifts a lot easier only down side fi light on all the time, but been told there is a wire on the ecu i need to cut, but cant find out wich one it is......any one know
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post #3 of 41 Old 10-07-2009, 5:49 PM Thread Starter
 
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Re: new to the forum need htev help

What do you mean by getting throttle and gears right?? I'm definately cool with getting the front end up easier
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post #4 of 41 Old 10-07-2009, 6:45 PM
 
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Re: new to the forum need htev help

The wire cutting trick is for gsxrs

The only way to cure the FI light is replacing servo.

I assume getting throttle right means being high in the revs and the correct gear to attain power since the bike loses quite a bit of low/mid range when the htev is removed or disabled.
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post #5 of 41 Old 10-07-2009, 7:55 PM Thread Starter
 
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Re: new to the forum need htev help

Ohh gotcha...thanks! But that issue can be smoothed out by eventually getting a power commander right??
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post #6 of 41 Old 10-07-2009, 9:55 PM
 
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Re: new to the forum need htev help

To a certain extent.

The HTEV, without the valve, is a hollow cubic ish connector. It does not have the individual paths that the headers and midpipe have, meaning flow will be greatly interrupted.

If you can, make your own "HASS eliminator" since it is no longer being made I believe.

Else, lock the HTEV in one of the 3 positions.
A pc will most definately help,
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post #7 of 41 Old 10-07-2009, 11:25 PM
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Re: new to the forum need htev help

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Originally Posted by olliemx19 View Post
Hi guys I just picked up a 929 and of course the servo gears are stripped...I've been reading on the forum about the hass eliminator. I know a lot of people are saying to keep the servo connected and just disconnect the cables...can I actually remove the entire assembly from the bike or will it affect something if I do. Also is there anything else I have to modify so that the bike runs proper or will it be fine with just the eliminator, I don't really have enough to spend on pc...thanks!
Don't bother with the HASS. Just leave the HTEV in one of its positions.
Yes, you can remove the servo motor. The only effect is a permanent error code on the dash.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #8 of 41 Old 10-07-2009, 11:35 PM
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Re: new to the forum need htev help

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Originally Posted by BurtonF166 View Post
The HTEV, without the valve, is a hollow cubic ish connector. It does not have the individual paths that the headers and midpipe have, meaning flow will be greatly interrupted.
Have you looked through the HTEV?
The HTEV when open is not a problem for clean gas flow.
Attached Thumbnails
HTEV.jpg‎  

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post #9 of 41 Old 10-07-2009, 11:38 PM
 
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Re: new to the forum need htev help

do those sharp edges not impede it?
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post #10 of 41 Old 10-07-2009, 11:43 PM
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Re: new to the forum need htev help

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do those sharp edges not impede it?
Why would they?
They don't project into the path of the gas at all.

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post #11 of 41 Old 10-07-2009, 11:58 PM
 
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Re: new to the forum need htev help

Just because it doesnt stick up, doesnt mean it doesnt alter the flow.
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post #12 of 41 Old 10-08-2009, 12:02 AM
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Re: new to the forum need htev help

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Just because it doesnt stick up, doesnt mean it doesnt alter the flow.
How can it alter the flow though?
It's like a dent in the pipe.
Yes, a miniscule amount of gas is likely to get trapped in the void but the rest will simply flow past it. I doubt the difference is even measurable.

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post #13 of 41 Old 10-08-2009, 12:07 AM
 
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Re: new to the forum need htev help

A dent is smooth.

A sharp edge causes turbulance and disrupts flow. V stacks are lipped out, to increase velocity, by having a smooth flow.

Ill do some modeling tomorrow and get a pic from StarCCM showing the differences in flow over sharp versus smooth
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post #14 of 41 Old 10-08-2009, 12:14 AM
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Re: new to the forum need htev help

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A dent is smooth.

A sharp edge causes turbulance and disrupts flow. V stacks are lipped out, to increase velocity, by having a smooth flow.

Ill do some modeling tomorrow and get a pic from StarCCM showing the differences in flow over sharp versus smooth
Make sure you show it 600mm down the pipe though so we can see how much difference it makes ;-)
I'm sure there's a _difference_, I don't believe there's any measurable difference to the bike though due to it.
If you were porting an intake tract it'd be a problem though for sure.

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post #15 of 41 Old 10-08-2009, 12:16 AM
 
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Re: new to the forum need htev help

Will do!
It'll take me a few days though
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