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202 Steel Billet Camshaft - Anyone apart from Tighe

Started by _Ned Loh_ , Jan 15 2013 03:52 PM
202 steel billet camshaft

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#1 _Ned Loh_

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Posted 15 January 2013 - 03:52 PM

Hi,

Is anyone apart from Tighe doing 202 steel billet camshafts?

Cheers.

#2 greens nice

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Posted 15 January 2013 - 06:38 PM

i was told Comp Cam's have the steel billet's, i would look into it.

#3 _Ned Loh_

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Posted 16 January 2013 - 06:17 AM

i was told Comp Cam's have the steel billet's, i would look into it.


They don't, I checked.

They may grind one for you if you give them a blank though.

#4 _oldjohnno_

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Posted 16 January 2013 - 06:45 AM

Will Tighes sell you a blank, Ned? I assume you want a steel core but don't want to use Tighes profiles on it. Some of the smaller cam designers/producers (eg Mike Jones) can make one-offs from a sample but I don't expect it'd be cheap.

#5 _Ned Loh_

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Posted 16 January 2013 - 03:09 PM

Will Tighes sell you a blank, Ned? I assume you want a steel core but don't want to use Tighes profiles on it. Some of the smaller cam designers/producers (eg Mike Jones) can make one-offs from a sample but I don't expect it'd be cheap.


Yes they will sell a blank. & Yes, I am looking at getting lobes ground elsewhere.

No it won't be cheap but relative to how much the whole shebang will cost it is not that bad, and quite possibly money well spent.

Not sure what I will do yet. Nothing will happen very quickly that's for sure. I've got a few roller lifters here now that I can dummy up/play with while I work out what I'll do with the camshaft...and I've got one almost ready to assemble before I get onto that. Must tidy up and get the improvements done to the 'assembly room' also...and...

#6 orangeLJ

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Posted 16 January 2013 - 03:55 PM

I think the last billet I bought came from Crow.

#7 _Ned Loh_

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Posted 16 January 2013 - 04:48 PM

I think the last billet I bought came from Crow.


Called them yesterday before posting. They haven't done steel billets for a while now.

#8 S pack

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Posted 16 January 2013 - 05:43 PM

So what's the go now? Are the majority of new aftermarket Holden 6 red,blue/black cams made from cast cores?

#9 _Ned Loh_

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Posted 17 January 2013 - 05:03 AM

So what's the go now? Are the majority of new aftermarket Holden 6 red,blue/black cams made from cast cores?


Yes, which is perfectly fine for all hyd / solid flat tappet cams btw.

#10 N/A-PWR

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Posted 18 January 2013 - 02:03 AM

i was told Comp Cam's have the steel billet's, i would look into it.


Right on the Money greens nice,
I have Confirmation from Comp Cams that they do both Hydraulic and Solid Cam Grinds from their Supplier supplied 'Heat treated 8620 Billet Cores'. Dave I

p.s. btw Ned Loh,
Holden Six cams fit both 186 and 202, good all rounder

Edited by TORYPOWER, 18 January 2013 - 02:07 AM.

#11 _Ned Loh_

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Posted 18 January 2013 - 07:04 AM

Odd. The person I delt with at Comp must have been lazy or just didn't know. I will try again...

#12 _Ned Loh_

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Posted 21 January 2013 - 06:54 AM

Right on the Money greens nice,
I have Confirmation from Comp Cams that they do both Hydraulic and Solid Cam Grinds from their Supplier supplied 'Heat treated 8620 Billet Cores'. Dave I

p.s. btw Ned Loh,
Holden Six cams fit both 186 and 202, good all rounder


Hi Dave,

I've tried comp again with no luck. Any chance you can give me the their comp cams part number for the holden 186/202 steel billet core? Or, if you can scan and post up your cam card I can work it out from that???

Cheers.

#13 N/A-PWR

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Posted 21 January 2013 - 05:36 PM

Hi Dave,

I've tried comp again with no luck. Any chance you can give me the their comp cams part number for the holden 186/202 steel billet core? Or, if you can scan and post up your cam card I can work it out from that???

Cheers.


Hi Ned Loh,
I will keep you posted, it has taken 2 months to get the Information I have obtained so far.
The only reason I am pursuing a 'Comp Cam' grind is that I know how good the Engine runs on one. Dave I

p.s. as stated before, 'Comp Cams' have two main suppliers and you will need to find out who they are.

#14 Uncle Chop Chop

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Posted 21 January 2013 - 08:33 PM

Why would you need a steel cam for a 202 rather than a cast one?

#15 N/A-PWR

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Posted 21 January 2013 - 08:38 PM

Good point Vick,
Maybe being driven from one end with high stresses on it. Dave I

#16 greens nice

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Posted 21 January 2013 - 09:41 PM

i am certain the level of vibrations the engine is making would adjust it, but 420-430lb's over the nose is enough to break a cast core behind no 1 cam bearing

#17 _Ned Loh_

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Posted 22 January 2013 - 06:59 AM

Hi Dave,

Ok, let me know.

I've reached the point with Comp (twice now) where the tech (different both times) has told me they can't do them. Their published cam cores are here http://www.compcams....haft-cores.aspx but if you can turn up the core number for a steel billet I'll have something to go back to them with.

Hi Vick,

To run solid roller lifters and associated valve train.

Hi Kevin,

Speaking from experience there? Sounds nasty.

#18 greens nice

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Posted 22 January 2013 - 05:57 PM

not yet quite yet, running 390lb's and 7800rpm solid roller on a cast core no problems for 7 year's (cam is very slow, not my engine or car though).
Lyn Stewart's gemini has broken 2 cam's behind no 1 with that spring pressure.

I do remember a knowledgeable circuit racer on a here saying cam's life depended on timing gear's used, helical v straight cut.
But he never stated which gear made the cam last longer :furious:

Edited by greens nice, 22 January 2013 - 05:57 PM.

#19 N/A-PWR

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Posted 22 January 2013 - 07:34 PM

not yet quite yet, running 390lb's and 7800rpm solid roller on a cast core no problems for 7 year's (cam is very slow, not my engine or car though).
Lyn Stewart's gemini has broken 2 cam's behind no 1 with that spring pressure.

I do remember a knowledgeable circuit racer on a here saying cam's life depended on timing gear's used, helical v straight cut.
But he never stated which gear made the cam last longer :furious:


Hi greens nice,
So the pressure on the cam is two sets of valves/ double valve springs being compressed at the lobe tips almost a the same time which would make each spring close to 100lbs each. ( thats if it were double valve springs )
As for Helical vs Straight cut Timing gears - straight would let the cam rotate nice and the helical would be driving it into the block putting stress there. Dave I

#20 greens nice

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Posted 22 January 2013 - 07:43 PM

my theory is that the helical's will be better because:
the helical gear will be pulled in toward's the block, and stay there. Assuming you know how to hold the cam gear on.
straight cut's will have no directional pull, so the oil pump and dizzy (maybe if it was a magneto) would be trying to pull/push the camshaft?
broken cam thrust plates are more common with straight cut's from what i've seen.

sorry for my dribble :blahblahblah:

Edited by greens nice, 22 January 2013 - 07:45 PM.

#21 _Ned Loh_

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Posted 23 January 2013 - 10:12 AM

not yet quite yet, running 390lb's and 7800rpm solid roller on a cast core no problems for 7 year's (cam is very slow, not my engine or car though).
Lyn Stewart's gemini has broken 2 cam's behind no 1 with that spring pressure.

I do remember a knowledgeable circuit racer on a here saying cam's life depended on timing gear's used, helical v straight cut.
But he never stated which gear made the cam last longer :furious:


Hi Kevin, good that it has held up, but you'd have to be into the grey area there. Because I'm tight fisted I'm tempted to give it (solid roller grind on cast core) a go, but I'm sick of making junk so I think I'll go steel billet.

Edited by Ned Loh, 23 January 2013 - 10:13 AM.

#22 greens nice

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Posted 23 January 2013 - 07:09 PM

sorry Ned i should have added that they don't last forever as they are not supposed to be used that way? not sure
the first one was in for 7 years and then started wearing and pitting on top of the lobes.

#23 madtoranajzedded

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Posted 17 July 2016 - 07:58 PM

Hi guys Any progress on who to go through to get blank camshaft .i want to get a an old speco cam done from out of a donk i had in the lates 90s .was in the lc gtr and was built from a guy who worked at gmh it hob.

It was an 32/72 grind . Brendan from speco is giving me the figures so i can get one redone.

Cheers maz

#24 madtoranajzedded

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Posted 18 July 2016 - 02:46 PM

Heey.Brendan from speco just emailed all the camshaft profiles they made and i see it in there.😃

They have a couple special cams..
also i see the Xu1 camshaft and bathurst grinds.Brendan also mentioned that my best
bet to have any of these profiles is clive
cams or hartley engines NZ who bought there camshaft grinder and masters lol

Gee ive fallen waay behind the times.😕

Looks like i still might b able to get the
grind i want ☺

Edited by madtoranajzedded, 18 July 2016 - 02:49 PM.

#25 _Agent 34_

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Posted 19 July 2016 - 08:11 PM

Hi,

Is anyone apart from Tighe doing 202 steel billet camshafts?

Cheers.

clive cams - got a roller cam off him in billet steel.

 

- just realised how old this thread was


Edited by Agent 34, 19 July 2016 - 08:16 PM.

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