I am an Activaist-v6 and a 2.1Estateerr

[wurlycorner]

Or it's cause I managed to make a double post (2 posts of the same stuff, cause I had had quote instead of edit) hence then editing out the second post (no option to delete it)...

[daviemck2006]

And that was self abuse too. I think we need the men in the white coats [emoji12] [emoji13] [emoji3]

[Stickyfinger]

[Stickyfinger]

Throttle body enlargement and port matching under way.

Throttle body to Inlet chambers, note the large mismatch which is causing me a little head scratching at the moment. I cannot get an image (in my head) of what I can do with the throat mismatch [bottom left], I may have to get it re pinned.




Note the generally good surface except in the inlet area and the chamber splitter [or whatever it is called].
I with smooth to that area only and knife edge the splitter.


Any thoughts on the "bulge" on the side of the inlet chamber and why it is there ? [Note: shown at Top of the image, it also has a cosponsoring "cut out" on the outside]

[Skull]

Good effort Stickyfingers

I remember years ago getting my bike gas-flowed by a well known 'tuner' and matched to a Yoshimura exhaust with 'power chambers' ..cost a fortune at the time .... it never ran as well after and on further investigation they had fitted the standard size exhaust gaskets which were now effectively restrictors and the 'power chambers' had just been cut off and welded up

Tried to claim costs back but company had already phoenix-ed into the same company

[Skull]

Good effort Stickyfingers

[Stickyfinger]

Interestingly, the gasket is @70mm and the throttle body at 65mm.....the inlet chamber throat is between the two.

I do not really think gas flowing makes much difference and polishing I think degrades the turbulence within the chamber. I will just match the sizes, clean up edges and flash a bit but leave everything rough. The exception to that will be the inlet side of the throttle body which will be polished

Good effort Stickyfingers

I remember years ago getting my bike gas-flowed by a well known 'tuner' and matched to a Yoshimura exhaust with 'power chambers' ..cost a fortune at the time .... it never ran as well after and on further investigation they had fitted the standard size exhaust gaskets which were now effectively restrictors and the 'power chambers' had just been cut off and welded up

Tried to claim costs back but company had already phoenix-ed into the same company

[Stickyfinger]

First rough cut.....


Before

[Stickyfinger]

A good fit on the other end......


Only a little work needed here.....

[Stickyfinger]

Well One port done ....but COLD (-7 tonight and a metal roof) stops play despite the wood burner glowing

[CitroJim]

but COLD (-7 tonight and a metal roof) stops play despite the wood burner glowing

Now you know why the old railwaymen used to call your part of the world 'Siberia' Alasdair

Good work though, I'll check my throttle body today, not been in my workshop for days and days now...

[Stickyfinger]

Burrrrrrrrrrrrrrrr morning .....cheers Jim.

Talking about cold.....a guy I know just finished this

[CitroJim]

That is lovely

[Stickyfinger]

The guys is a star at action sculpting....his ground work however is stunning on this.

[Stickyfinger]

Every time its cold I seem to just mess about