Converting a Holden v6 (Read 36,555 times)

[346 tri-rail]

Hi guys & girls,iv been reading the above board and was hoping some one could tell me what brand of valves to use,iv been looking and no one seems to be able to supply performance one's.(a part # would be really helpful)
Can you use a new set of replacement valves (factory),and just do valve springs.
Is there any where that states what you can do to a set of heads,any help would be greatfully appreciated ;D
Good luck to every one with the off season rebuilds,better go and carry on with the new chassis.
Glen 346h

[brian]

go to ferrea web sit and in the search box try these part numbers they motor is originally a buick
F6237
F6238
check dimensions and if there the same order them through some one like JEGs or motorstate

[346 tri-rail]

Thanks for that Brian,ill try that two night

[hdr]

Glen did you ring segadins.

[346 tri-rail]

Hi Clint,i rang segedins and they were no help,they said they only did replacement holden valves.The part #s for the buick appear to be the same size as holden,they are a fraction bigger head size.thanks again for the help

[hdr]

Yeah im sure it was buick that DAn put in, they were Fererra

[The Observer]

Be great to hear what works in the valve department. THis is great information for the board, thanks to all contributors.

Was asked another question last night from a converter to a v6 - what weight/size are people roughly getting there flywheels machined too? I know lighter is better, but you don't want to run out of puff halfway down the straight.

thanks for any advice.

[mrt]

So how is everyone changing there motors up to 248 cubs? Are yous boring them out and sticking some sort of piston in there and if so what are they? Or are they using a bigger stroked crank?

[newbee11]

At green sheeting Mike Harris was told that his Hartley v6 was not allowed to run the water inlet in the front of the motor, Why is that?

[Saloon29s]

Its something to do with turning the inlet manifold around.

[Deleted]

Turning the inlet manifold around 180 degrees is no longer allowed, and is covered in the latest Directors News (posted on 10 Oct, from a meeting held on 26th August :
www.speedway.co.nz/exec/150aug2007.pdf

Seems a strange decision, when considering the manifold has not been modified to do this, and offers no performance advantage. It simply makes life easier, which is something the directors are obviously not keen on

More decisions / interpretations to come yet so I hear. Why this couldn't all be done at the end of last season or before this season had started, I'll never know!

[Loopy]

if somebody on the board has his way, they want all engines to be OME inside and out. So your Fords and Holdens will be obsolete. Eg. must run right and left exhaust manifolds (Holden). Can only be VN to VN, VS to VS as in heads.

Fords must run OME plug on distributor and advance and retard vacuum line.

So chew that one over

Cheers Loopy

[tank11]

What would they do in the case of injection to carb change-over Loopy?

[chequebook]

SNZ News

01 Nov, 2007
Stockcar Manifolds
Category: latestnews
Posted by: snzceo
Here are the two Directors interpretations to become Board Policy:

Standard exhaust manifolds may be fitted in any configuration i.e. left hand on right hand or 2 x left hand or 2x right hand as long as the manifold & head surface is not modified.

VN manifold can be turned 180 degrees provided T12-2-3 (c) must be complied with.
[More]

basil said:

Turning the inlet manifold around 180 degrees is no longer allowed, and is covered in the latest Directors News (posted on 10 Oct, from a meeting held on 26th August :
www.speedway.co.nz/exec/150aug2007.pdf

Seems a strange decision, when considering the manifold has not been modified to do this, and offers no performance advantage. It simply makes life easier, which is something the directors are obviously not keen on

More decisions / interpretations to come yet so I hear. Why this couldn't all be done at the end of last season or before this season had started, I'll never know!

[nzf2stocks.]

Finally, some common sence from SNZ. Were they ill?

[The Observer]

Not sure what the story was. You;d think they would try and do something about superstocks rather than mess with the most successfull class in the country.

aNYWAY, heres an update on where i'm at.

After asking for advice way back when on a Holden v6 for a couple of mates events took an interesting turn.

I was offered the chance to purchase a brand new car that was set up for a Holden, so all the fantastic advice given was awesome.

Unfortunatly finances meant the outlay on the car was about all that i had. I put a stock VR V6 in for opening meeting and ran a bearing.

I got another good runner for the South Island title and ran another bearing - it appeared to me that standard the little Holden v6 wouldn;t do the job. Not surprising condsidering that was what the advice on this board had been all along!

Bit the bullet - sent the bits away to get the crank ground, and balanced...and since its up there maybe a set of bigger pistons that might raise the comp a wee bit? Ok...

Heres a picture of the block and gear arriving back at the big bad engine builders...

[The Observer]

Apologies for the Cellphone quality pic, but the ground crank in place



Thanks to ImageShack for Free Image Hosting

[The Observer]

ONe last pic i promise.

Engine builder Diff breather guru in behind is Shane Olsen (see below)

not the best engine model, but understandably excited. IMage is clickable for a close up of those big sexy...pistons.



and the infamous diff breather

[The Observer]

Olivers Automotive Specialists. Legends



p.s thanks for the PMS, yes car could use a bit more of a clean ;D

[drew]

Looking good mate.

Hope to see you racing at KOTC.

Drew