683 replies to this topic

[rodomo]

arh ok wot type of colectors u got coming ?

Nag! Nag! Nag!
They're already here......................getting to that bit.

Header plates fitted to head.................. then the fun begins.





Spare head came in handy.

[micklx]

Hey Rob, whats under those black sections in the pic ?

And seriously - you spend way too much time working on your car. Is your TV broken ?

[rodomo]

Hey Rob, whats under those black sections in the pic ?

And seriously - you spend way too much time working on your car. Is your TV broken ?

Black sections? Mick, that's the porting!!!!

Hayden! Collectors! Hayden! Collectors! Hayden! Collectors!

I'm using the Genie collectors.

The primaries were cut off flush:


The gap closed and welded:






The Genie collectors compared to Motorvator:



And the "cow bell" cos that's the noise it makes when you hit it with a hammer:



I reckon the Genie stuff "merges" better:

Edited by rodomo, 08 April 2010 - 12:55 AM.

[rodomo]

Finished today.
I'm calling these the "Peacemakers" by RoDoMoToVaToR.



Bit of a comparison.



Sent them out and had them V.H.T. coated.



Next on the agenda is the "Mick Master Mega Muff"

Edited by rodomo, 10 April 2010 - 08:16 PM.

[wot179]

we are not worthy.

[76lxhatch]

They look great, the intake must be tight around the primaries though...?

[TerrA LX]

Similar the old genie

Edited by TerrA LX, 10 April 2010 - 09:45 PM.

[rodomo]

Similar the old genie

I saw those, yes, a good "bolt on" set I reckon.

[MRLXSS]

Wouldn't it just be easier to put a V8 in?

[rodomo]

You just don't get it do you Matt?
The aim is to beat V8's with a 6 on no budget

Edited by rodomo, 11 April 2010 - 11:09 AM.

[mr5000]

keep going with the 6 rob love seeing you do all the lil mods to them to get em going better secretly ive always wanted to make a hot six but have never really been able to resist a v8 if had the money behind me would pump a bit more into emmas car to really get it goin it doesnt make much power or torque but it revs really nice and goes pretty well go figure?

[rodomo]

rob ,
i gathe u must be using a diffrent intake mani as it would be a very tight fit over pipes with straight legs like that.????
Cheers hayden

Bloody damn know it all young whipper snippers! Dammit!



Lucky there was plan "B"

Story time with Uncle Bob:

Late last year, a forum member asked me if I could tune his triple SU's on his pretty silly 202.

I went there, had a go, found all the throttle shafts to be worn and gave up.

I pointed out to him that 1.50's were too small anyway and he should look for some 1.75's.

So............Some weeks later he hands me a set of 1.75 CD's that he bought off another forum member, I cleaned them up (they were painted red) fabbed up a couple of missing parts (that I couldn't buy anywhere) and put kits through them.

He fitted them, I tuned them, job done!

Anyway, in the mean time, his brother in law is selling a set of XU-1 headers on e-bay and a third forum member contacts him and asks wether he would swap the headers for a set of 1.75 SU's. Swap takes place, forum member 1 buys them off his brother in law and gives them to me for services rendered.



Forum member 3 tells forum member 1's brother in law that they are "a bit ordinary" so fair swap?

4 things I found to be "ordinary" were:
1 needle loose in a piston.
1 aircleaner fitted upside down, this blocks the piston and fuel bowl vents.
1 throttle lever loose on the shaft (tuning nightmare)
And bowls full of sh1t.



Stripped, cleaned, kitted and these are now ready to fit.



But.................the manifold is 9 port and I have a 12 port head?







Also, longer manifold studs had to be made because of the 12mm adapters. The stuff in the yellow bottle makes work easy.



This pick shows the fit up with the original Genies, I had chopped out the header plates and re-timed No. 6 primary but wasn't happy with them so that is why it has dragged on.



A second up the back straight, a second and a half down the front straight, a few tenths through the corners and I'll be right up forum member No.4's clacker!

[rodomo]

I saw that. Thanks, but no room for it.
It would be a good start for someone though.
Looks about the same nic as the Grease Slapper when I got it.

[rodomo]

hey rodomo did you want the VC i have in the for sale section ? you can have it for free if you want it, no engine or box, does have the diskbrake rear end, and very thing else... if you want it you can have it! i just dont want to crush it but need it gone...

Free plug:
http://www.gmh-torana.com.au/forums/index.php?showtopic=45085

[rodomo]

It runs, idles and accelerates and the Mega-Muff is quiet.

[Heath]

Ahh that's interesting! Sounds like it needs some re-engineering

[rodomo]

I read up a lot about exhausts, extractors, mufflers etc.
Basically got confused.

Then a mate sent me this:

"Back pressure is bad and if you can get the exhaust to exit in a low pressure area on the vehicle all the better.

For no or very little power loss the exhaust must flow 2.2 cfm per horsepower (0.2 psi back pressure, 5 to 6 inches of water)

To achieve open pipe power with a silenced system you require an expansion chamber at the end of the collector. This expansion chamber must have a volume of 8 to 15 times the size of one cylinder and have an abrupt change in cross section. This then feeds into the rest of the system and silencer/s and as long as it flows 2.2cfm per hp no power loss will result.

The expansion chamber basically replicates an open pipe."

Sounds like motor bike stuff? Expansion chamber?

Me being a bit old school, it made a bit of sense, as well as "The more exhaust you get rid of, the more fresh charge can enter"....................something from trade school days.

So I made this:

Edited by rodomo, 05 May 2010 - 01:10 AM.