ESE's works engine tuner

**bucketracer** · 16th June 2010, 07:54

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Thats very impressive, how do you pickup the engine rev's?

**F5 Dave** · 16th June 2010, 09:30

Originally Posted by TZ350

Making progress with the 50. As the stroke is 3mm shorter the cylinder had to be trimmed top and bottom to get the port timing where I wanted it.

The exhaust stub holes were stripped out and in the wrong place so I tapped them M8 and glued some threaded alloy plugs in with Devcon F.

When it came time to re-tap the holes M6 I found that the old welded repairs had moved the centres way off so the plugs did a great job of allowing me to get the new bolt holes in the right place.

I am very pleased with the finished job………

Yeah they do that. I don't run studs, I thread in M8 allen head bolts that are drilled so can be lockwired.

**TZ350** · 16th June 2010, 21:02

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This is on my list of things to check out when I get the FZR/GP125 going...........

MiniMS is a Do It Yourself Electronic Fuel Injection Controller based on the Megasquirt Ver. 2.2 http://www.mini-ms.com/

**TZ350** · 16th June 2010, 21:36

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As I am currently setting up a new head for the 50 is probably time to revisit MSV, mean squish velocity.

MSV Mean Squish Velocity Calculator:- http://myweb.tiscali.co.uk/teamsparr...rheadsv2_3.xls

**Skunk** · 17th June 2010, 16:11

Originally Posted by Buddha#81

Both the CBR's down here are Aussie spec race bikes that are now modified (cams etc)

Huh? Race spec?

**F5 Dave** · 17th June 2010, 17:29

he means for their kids on bike series like Av & a few of the Chch kids did over in Auss. Seemingly now with more work done on them

**TZ350** · 17th June 2010, 23:00

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Someone elses attempt at Hydro-forming an expansion chamber..................

Like our own, and only attempt, the curvature of the pipe tightened up and we also got wrinkles just like in the video.

I think that Hydro-forming the header might be fairly easy with practice and worth the effort to get a nice smooth shape.

**aircooled** · 17th June 2010, 23:55

Originally Posted by bucketracer

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Thats very impressive, how do you pickup the engine rev's?

DataMite inductive pickup, part of the Dyno software package i got from Performance Trends.

**F5 Dave** · 18th June 2010, 09:14

Yeah your welding has to be better than really good, I've seen a few attempts.

**Buddha#81:Me** · 18th June 2010, 10:42

Originally Posted by F5 Dave

he means for their kids on bike series like Av & a few of the Chch kids did over in Auss. Seemingly now with more work done on them

Al Hoogie and Nick Cain brought their Aussie spec (Avalon did the same series) CBR's back a couple of years ago and now have chased more HP out of a already fast package!

**Buckets4Me** · 18th June 2010, 12:26

Originally Posted by Buddha#81

Al Hoogie and Nick Cain brought their Aussie spec (Avalon did the same series) CBR's back a couple of years ago and now have chased more HP out of a already fast package!

so you are trying to tell us that these Factory race preped bikes that have now had more work done to them are somehow infieror to our rs framed comuter engined bikes ?
and that Avalon managed to givethem a run for there money with a broken engine mount and the wrong gearing (makes you wonder what would have happened with a better bike)

**F5 Dave** · 18th June 2010, 15:27

Bah, they're not factory race preped, they were just a bunch of CBRs stripped down for a one make race series. They didn't even have proper rearsets, yuo had to make them up. So they've tuned them, just as the FXR lads have.

Bit of a bummer as far as I'm concerned, with a lucky start I could hang with the CBRs in a sprint race on my 50. No chance if they are faster & I'm probably slower at the moment. No chance of finishing my 100 for the BOB.

**Buddha#81:Me** · 18th June 2010, 15:59

Originally Posted by F5 Dave

Bah, they're not factory race preped, they were just a bunch of CBRs stripped down for a one make race series. They didn't even have proper rearsets, yuo had to make them up. So they've tuned them, just as the FXR lads have.

Bit of a bummer as far as I'm concerned, with a lucky start I could hang with the CBRs in a sprint race on my 50. No chance if they are faster & I'm probably slower at the moment. No chance of finishing my 100 for the BOB.

they are front running street stock bikes on Ruapuna full circuit, so not too shabby. Ridden very well by the current 125 champ and the other (nick) has 125 experiance. Yes Avalon rode well but I wonder if Al hoogie was doing enough to keep pace with her and capitalised when her engine mount broke? There are a couple of projects underway that should keep them honest.

**jasonu** · 18th June 2010, 16:26

Originally Posted by TZ350

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Someone elses attempt at Hydro-forming an expansion chamber..................

Like our own, and only attempt, the curvature of the pipe tightened up and we also got wrinkles just like in the video.

I think that Hydro-forming the header might be fairly easy with practice and worth the effort to get a nice smooth shape.

I think think radiusing the edges to the expected radius of the finished pipe where the top and bottom sections meet and are welded might improve the way it blows up rather than starting with that flat set up in the vid.