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roller lifters

Started by _uglybob_ , Apr 12 2006 11:29 PM

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62 replies to this topic

#26 _82911_

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Posted 17 April 2006 - 10:07 PM

By 7.7 sec capability I assume we are talking Joe Zullo's rail?
46Psi from a tefloned 671 bolted to a billet head that has over 400 man hours spent on it's development,as well as a $10K bottom end should see you at the "cutting edge" then shouldn't it! As far as Junk yard 6's go anyway... :spoton:

For realistic comparisons of what a Holden head is and isn't capable of under boost, look at Norm McKormicks digger, more realistic boost pressures and a 9 port IRON HEAD... Not that far behind Zullo's million dollar missile either...

The Zed head... is a rebuild of the original Duggan/irving moulds, apparently Zullo bought the moulds and fixed them up somehow?
Price for the Zed should include the rocker cover as there is no way you will get a stock Holden cover on there. Rocker gear is Ford.... Oiling system supply and return needs to be made external as well.. So the pushrod feeds are not used.
New exhaust extractors need to be fabricated as well.
Not really a bolt on proposition, certainly not in a weekend or 2 anyway!
Probably not as much work as modding the Honda/Ford head to sit on a 202... but certainly neither are straight forward...
The Yella Terra on the other hand.... Straight on. But will make much less power on a FULLY DEVELOPED RACE ENGINE.
Anyway on topic!
The roller lifters you need are by Comp cams.. performance Wholesale in Brissvegas stock them.

Cheers Greg..

Edited by 82911, 17 April 2006 - 10:08 PM.

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#27 _brett_32i_

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Posted 22 April 2006 - 12:53 PM

had a play at the wreckers today...

push rod ford head matches up well as far as push rod galleries. all water and oil would need to be blocked up, and fed exernally. all head bolt position in head would need to be altered.

ohc head fits best. only 2 of the head bolts would need relocating, and the external feed of water/oil. but the hard part would be setting up the cam.
i would change to a timing belt system, sealing up block to keep that area dry now, and either going around water pump area using idlers, or spacing out water pump (think chev) and run belt up through the middle.

however, i think the holden bottom end would have be extremely tough to warrant all this effort.
its maybe something i'd contemplate doing one day only as a shed project. just to say i'd done it. maybe put it in a boat?

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#28 _toranaracer_

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Posted 22 April 2006 - 09:51 PM

G'day all,
I am the builder of the FOLDEN engine that Howard has spoken about.
This conversion we have found to have far more power potential than any 9 or 12 port head that we have used.
The core engine has seen all the usual YT heads and several versions of the Ford/Honda heads.
Feel free to come to Sandown tomorrow if you can and have a look for yourself.
We are in garage 27.
Anyway, the roller lifters we use are;
Isky 1241-R, to suit Chevy II 4 cyl 153ci (set of 12)
These even have the correct link bars to suit the Holden block.
Contact Performance Wholesale in Qld (07 3808 1986)
Regards,
toranaracer.

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#29 _CHOPPER_

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Posted 22 April 2006 - 10:20 PM

How much does one of these converted heads cost?

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#30 rodomo

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Posted 23 April 2006 - 02:30 AM

Give Ian a call at Lilydale Engine Reconditioners.(If he's still kickin) He had one of these Ford/Honda (Honda developed them for Ford so they could change from cast iron crossflow to alloy crossflow) on a 202 around 15 yrs ago. 03 97350516

Edited by rodomo, 23 April 2006 - 02:36 AM.

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#31 Com_VC

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Posted 23 April 2006 - 03:25 PM

If anyone goes to sandown please take some pics

This is very tempting and sounds like an awesome conversion.

I think i'll be going down to the wreckers soon to buy myself an xf crossflow alloy head and seeing what needs to be done

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#32 _brett_32i_

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Posted 23 April 2006 - 07:57 PM

got pics, waiting for batteries so i can suck em out of the camera. need someone to host them...

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#33 Com_VC

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Posted 24 April 2006 - 08:19 PM

argh can anyone host? dying to have a look at these

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#34 _SiC_

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Posted 24 April 2006 - 08:20 PM

sounds different would love to see pics

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#35 _brett_32i_

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Posted 24 April 2006 - 08:57 PM

only got 3 pics before camera went flat, but email me and i'll pass them on.

[email protected]

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#36 _dave720gtr_

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Posted 24 April 2006 - 09:14 PM

Dont want to come across to critical but a ford head on a holden isn,t a
Good look! :tease:if its got a ford part number its a ford head not honda"LOL" it would want to make 100hp more for me to want to put one on
NOZ is the go if you want bolt on HP

But when it comes to a race car these guys are looking for 10th of a second
over there competitors. And will try any thing two get the edge over them

BUY A CORTINA?
The guys in the ford forums if thay read this would be saying hay! There all fitting
ford heads to there torrys to make them go faster! :tease:

just my view that all

dave.......

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#37 _brett_32i_

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Posted 24 April 2006 - 09:34 PM

the gain was 40hp over the yt 12 port. now 260hp at the rear.

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#38 lakeside

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Posted 24 April 2006 - 09:47 PM

why do get bolt the whole 250 Xflow engine in the torana. Don't even have to stroke them. Alloy heads $50, not $3000. Who gives a shit who made it. I would love to put one of those new falcon engine in my lc torana, and give the 308 i'm doing the ass. It would be a fast taxi powered torana :rockon:

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#39 _dave720gtr_

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Posted 24 April 2006 - 09:51 PM

year i have seen some pretty tuff holden sixers over the years in speedway cars and the like
and i think you can get that much with out the ford head! just a 9 port will pull
those numbers with webbers and all the othere goodys below it

good luck with it Cheers dave.......

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#40 Litre8

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Posted 24 April 2006 - 10:55 PM

A 9 port pulling about 350hp at flywheel normally aspirated on petrol????

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#41 _82911_

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Posted 25 April 2006 - 09:05 AM

^ You are wise to be a little cynical grasshopper....

A 9 port pulling about 350hp at flywheel normally aspirated on petrol????

The best I have managed so far is 321hp at a cost of around $15000.
There is no way that a Holden head...9port or 12 port... alloy or iron will ever compete with an Irving/Duggan/JZed or Honda/Ford head.
Period.
A challenge....
If anyone out there thinks they can get 350@flywheel out of a 9 port Holden 202... email me I will pay you to build my next engine!
But if you fail to reach 350HP @flywheel... Then you pay me back what it cost to build and I KEEP THE ENGINE.....
Now who's brave enough to inflate their HP figures! :spoton:

Cheers Greg..

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#42 _CHOPPER_

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Posted 25 April 2006 - 09:57 AM

Didn't somebody claim to have an Oldn64 modified 9 port head flow 600HP?

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#43 Litre8

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Posted 25 April 2006 - 10:12 AM

Flow 600hp? If you leave the head off maybe..... ;-)

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#44 _CHOPPER_

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Posted 25 April 2006 - 10:19 AM

Greg didn't take the claim too seriously either. I know of some people who can flow a lot of air, but that's out of their own exhaust valve. You know, the one between their legs.

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#45 _dave720gtr_

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Posted 25 April 2006 - 11:36 AM

Didn't somebody claim to have an Oldn64 modified 9 port head flow 600HP?

know one claimed that a holden 9 port could flow 600hp chopper
I said that i have seen holden 6 -9ports making 260hp on alchol wheels
know one said anthing about 350 fly wheel hp ! what is it a auto 90hp loss
through drive line seems a bit much ?

829911 didn,t state witch head he was useing two make 320hp

I wasn,t implying that a 9-port could could compete with any of the heads mention .

the engine i was talking about had a custom 40130 crank/rods from( hank the crank usa ) were talking 15 years or more ago . this fella took one look at the holden crank and laughed said it looked like a cork screw!

holden sixers have been raced for years there are guys out there that have them making "hp some of use could only dream of. and thay dont get on
computers talking shit about them thay race them !

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#46 _CHOPPER_

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Posted 25 April 2006 - 11:41 AM

#1 know one claimed that a holden 9 port could flow 600hp chopper

#2 829911 didn,t state witch head he was useing two make 320hp

#1 When we were using the phpBB, somebody claimed they had a 9 port head modified by Oldn64 that could flow 600 HP.

#2 I'm 99% sure that was a 9 port head.

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#47 _dave720gtr_

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Posted 25 April 2006 - 12:11 PM

thanks for clarifying that chopper i though u were implying that
for a holden 6 to make 260hp wheels the head would have to flow 600

I should of stated first that it was no holden 6 bottem end in fact the hole
engine was built in the usa along with the 9 port

cheers

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#48 _dave720gtr_

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Posted 25 April 2006 - 04:22 PM

year but theres one even better 82911. you forget! For a holden 6 if you got the coin" is not a zed or a ford or even a out dated duggan

Its made by BOB KROGDAHILL previously from townsville now lives in
Mackay Qld . this fella makes it from scratch. twin over head cams, twin plugs for ech cylinder ,alloy cross flow
price fitted $5000 well that was the price 5 years ago, his Lc runs 10s try 400hp alcohol with webbers at fly wheel and will make more.
Put this head on a $5000 dollars blue bottem end and for $10.000
you got a holden 6 with more grunt then any engine with a ford head
zed or duggan if you think i am full of it . there is a 4-5 page wright up
on bobs heads in a old street machine mag that i dont have.

And as any one looked at" bruce dummet" engine he racers a lj lc.
his a front -runer! and the last time 2 years ago i looked at his engine was at a friends
work shop when he was getting new custom pipes fabed up, it had a 9 port ?
very fast car plus driver .

cheers

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#49 _CHOPPER_

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Posted 25 April 2006 - 06:07 PM

But where do you get hold of one? The website went down what seems like years ago. Makes it hard to get one if you can't contact the maker.

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#50 _dave720gtr_

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Posted 25 April 2006 - 06:29 PM

good question , i can get his number wether or not he is still making
them or not is another ? but he did recently build a 250 ford engine for
a mate! so he maybe still active