NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   modded and ported s4 TB (https://www.nopistons.com/northwest-28/modded-ported-s4-tb-59364/)

rmriggin 05-15-2006 08:33 PM

http://img109.imagevenue.com/loc191/...rottlebody.jpg

I got bored at work today with all the heat so I decided to mod another throttle body and do a bit of porting while I was at it. Not pretty but all I had was a cut off disc and a coarse grinding stone.

gregs 05-15-2006 08:38 PM

the ones ive seen where the TRI is in the middle of the 3 holes most people port it to a sharp edge, that looks cool but not that big of a port job. looks good though, ill be back in the EFI game here in the next 2 weeks, man do i miss it

rmriggin 05-15-2006 08:52 PM

not too big of a port job but I removed a LOT of material. the middle portion used to be level with the top of the throttlebody. I did my best with the tools provided though. I am not too concerned about it though. Not like I am using it. Gave me something to do, and air tools keep you cool (noisy as hell, but keep you cool).

Codeblue 05-15-2006 09:44 PM

looks good Robert. are you going to put it on you car?

KompressorLOgic 05-15-2006 10:57 PM

hey robert did you dyno with new plugs at all??

rmriggin 05-16-2006 12:20 AM

My plugs were cleaned with kettle's plug blaster a week before ABF. I think they were "newer" plugs but then again I am fairly sure kettle may have got the newest plugs I had when we installed the bad transistor trick. My current throttle body I have in the car only has the double plates removed. When I dynoed at ABF I was using the above TB... Just not AS ported as you see it there. I did manage to prove that the TB mod was good for at least 4HP on an NA.

Interested in trying out that TB Ryan? The TB mod was originally designed for turbo applications so even though my results were good I would imagine that a turbo could have possibly even better results.

Hyper4mance2k 05-16-2006 02:57 AM

If I ever get time I'm going to mod the s5 TB I have. Then sell it!!!

gregs 05-16-2006 03:08 AM

ive had the same plugs for 2 years, you think its hindering my performance. hahahaha

rmriggin 05-16-2006 01:07 PM

Ryan is trying to find out how I could have possibly beat his number that he put down with the same car at last years ABF.

z-beater 05-16-2006 01:14 PM

LOL, nice work https://www.nopistons.com/forums/pub...IR#>/smile.png


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