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 Post subject: Re: 63mm Throttle body
PostPosted: 08 Mar 2011 19:42 
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Joined: 30 Nov 2004 23:24
Posts: 397
Location: Malaysia
Country: malaysia
guys
i found one 63mm t/b complete wit stepper motor and tps.
mine is a stock 60mm t/b
so .....
1- is it plug and play means i just remove my stock and replace wit this 63mm no tuning needed ?
2- Im on piggy back wil it effect my tuning ?
3- do i need to change PFR in order to better fuel becoz of change in air flow ?
thanks
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 Post subject: Re: 63mm Throttle body
PostPosted: 29 Mar 2011 01:41 
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Joined: 14 Nov 2009 02:34
Posts: 136
Location: Poland
Country: PL
from which car fits 63/65mm throttle body to the engine 4G92 Mivec gen1???

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 Post subject: Re: 63mm Throttle body
PostPosted: 12 May 2011 00:05 
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Joined: 09 Feb 2008 21:21
Posts: 134
Location: Poland, Lodz
Country: Poland
62-63 mm is max that you can bore your stock manifold anyway , I could not find any mitsu with 63 mm throttle or even a 63 butterfly that would fit mitsu throttle ( Prelude Type-S but expensive).

Here is mine
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 Post subject: Re: 63mm Throttle body
PostPosted: 18 Jun 2011 19:10 
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Joined: 04 Dec 2009 22:09
Posts: 251
Country: OZ
So this 63MM TB is a modified stock mivec TB?


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 Post subject: Re: 63mm Throttle body
PostPosted: 19 Jun 2011 07:26 
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Joined: 09 Feb 2008 21:21
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Location: Poland, Lodz
Country: Poland
zeni-tani wrote:
So this 63MM TB is a modified stock mivec TB?


yes

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 Post subject: Re: 63mm Throttle body
PostPosted: 05 Jul 2011 18:26 
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Joined: 06 Jan 2004 17:01
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pdguy wrote:
guys
i found one 63mm t/b complete wit stepper motor and tps.
mine is a stock 60mm t/b
so .....
1- is it plug and play means i just remove my stock and replace wit this 63mm no tuning needed ?
2- Im on piggy back wil it effect my tuning ?
3- do i need to change PFR in order to better fuel becoz of change in air flow ?
thanks


yes to all three questions except witha caveat on question 1. yes you can swap so is plug and play between cars of same generation, you can do with no tuning but will probably lean the car out and run worse.


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 Post subject: Re: 63mm Throttle body
PostPosted: 08 Jul 2011 16:19 
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Joined: 06 Apr 2009 09:57
Posts: 27
Location: Auckland
Country: NZ
Does anyone (particularly anyone in Malaysia where these are sold) have any experience with the s90 70mm TB?:

http://www.lelong.com.my/super-90-s90-a ... Sale-P.htm

Does the evo 4-6 manifold/TB have the same bolt spacing as the 4G92?


70mm is quite large, probably bigger than necessary, but as summit mentioned above:

summitsvift wrote:
62-63 mm is max that you can bore your stock manifold anyway


The intake manifold will be a limiting factor, which is Ok.


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 Post subject: Re: 63mm Throttle body
PostPosted: 08 Jul 2011 22:24 
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Joined: 09 Feb 2008 21:21
Posts: 134
Location: Poland, Lodz
Country: Poland
I still got a bit of trouble running it, first I thought it's TPS and I did set it up correctly, but the problem still remains.
So when the engine gets really warm , and while I'm driving it it's fine , but when I approaching traffic lights , put the neutral gear and stop the idle goes up from 900 to aprox 1400 stay's there for a sec and than goes down again and it does settle at 900 after that again and then it's fine , I know it's Idle control but why is this happening ?

It's bit annoying :mrgreen:

Soon I will go for a dyno run , but first I want to do valve clearance and still waiting for a right tool to do that. :roll:

Baz the Evo throttle is the same bolt pattern , Evo 4 Tb is actually the same as Borg.
Depends if u running gen1 or gen2, there is far more parts available for Gen1 Mivec from Malasia. I think you would need to buy custom evo 1 2 3 intake manifold and than cut the flange off and custom fit 4G92 flange. That would actually work and those intake usually comes with big TB , otherwise as I have said before stock manifold can only be bored out to 63 mm. I have also seen custom 4G93 turbo manifolds for gen 1 and those as far as I know would bolt on Mivec's.

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 Post subject: Re: 63mm Throttle body
PostPosted: 12 Jul 2011 15:30 
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Joined: 09 Jun 2004 16:33
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Location: Auckland
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The 63mm ones are not the same as what Bart made. Half the shaft is cut out too, this makes it more like 65mm. There is not need to modify the manifold, it has no shaft or butterfly so flows well.

The only mod it needs is to bevel the edge so there is smooth flow. I didn't even bother to do that much. I will next time the engine is apart. Remember boring the manifold also changes the flow balance to the cylinders, not sure for better or worse.

Best to fit the veil reg with stock throttle body and run it like that at 36? Psi to make sure that doesn't introduce trouble.

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 Post subject: Re: 63mm Throttle body
PostPosted: 12 Jul 2011 20:50 
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Location: Poland, Lodz
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Rabbit wrote:
The 63mm ones are not the same as what Bart made. Half the shaft is cut out too, this makes it more like 65mm. There is not need to modify the manifold, it has no shaft or butterfly so flows well.

The only mod it needs is to bevel the edge so there is smooth flow. I didn't even bother to do that much. I will next time the engine is apart. Remember boring the manifold also changes the flow balance to the cylinders, not sure for better or worse.

Best to fit the veil reg with stock throttle body and run it like that at 36? Psi to make sure that doesn't introduce trouble.


I thought Bart had 63 mm with half cut shaft ?
I wanted to do this but it's a risky one, with possibility of that shaft braking and ruin your engine, unless u got custom shaft from better steel I would not cut stock in half.
Anyways It's getting better in time guess Ecu is learning :mrgreen: but still not perfect

But I still got second throttle so i might try this :roll:

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 Post subject: Re: 63mm Throttle body
PostPosted: 16 Jul 2011 22:30 
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Stock shaft is still screwed to the butterfly so if it did snap it would all hold together. The screws are hammered so can not come out again.

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MIVEC Data | Mitsi's > 96 GSR (stolen) | 97 Evo 4 (sold) | 96 Cyborg-RX (crashed) | 93 Cyborg-R (sold) | 3x Mirage 4WD (sold) | 98 MIVEC Race car (sold)


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 Post subject: Re: 63mm Throttle body
PostPosted: 20 Jul 2011 13:27 
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Joined: 20 Jul 2011 13:25
Posts: 4
Country: barbados
hi, does any one know where i can source a 63mm tb asap


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 Post subject: Re: 63mm Throttle body
PostPosted: 21 Jul 2011 19:01 
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Joined: 06 Apr 2009 09:57
Posts: 27
Location: Auckland
Country: NZ
4g92 mivec bdos wrote:
hi, does any one know where i can source a 63mm tb asap


If you want 63mm, remove your stock TB and have it TB drilled out to 63mm.

Another option is an aftermarket TB. I've just ordered a s90 70mm TB for an Evo4-7.


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 Post subject: Re: 63mm Throttle body
PostPosted: 25 Jul 2011 11:08 
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Joined: 03 May 2011 12:58
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Country: Moon Racing
I have my original 60mm tb 4G92 MIVEC RS for 2GEN, I ride because I want a bigger build a project with more horses than the original brings, I thought the choice of the Super 90 to 62mm can be good, I will not modify the original but an aftermarket, the S90 will be good to 62mm aftermarket throttle or another I recommend that offer me better benefits.


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 Post subject: Re: 63mm Throttle body
PostPosted: 26 Jul 2011 07:25 
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Joined: 09 Feb 2008 21:21
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Location: Poland, Lodz
Country: Poland
John wrote:
I have my original 60mm tb 4G92 MIVEC RS for 2GEN, I ride because I want a bigger build a project with more horses than the original brings, I thought the choice of the Super 90 to 62mm can be good, I will not modify the original but an aftermarket, the S90 will be good to 62mm aftermarket throttle or another I recommend that offer me better benefits.


pict ??

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