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Sig Erson Camshafts
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Topic: Sig Erson Camshafts (Read 13789 times)
OldSpeed
Newbie
Posts: 46
1300 Addict.
Sig Erson Camshafts
«
on:
March 19, 2009, 00:11:54 am »
Evening all!
I've been continuing my hunt for period bits for my Beetle rally car replica build and I've managed to get my hands on a Sig Erson VW210 camshaft which is believed to be from a 1970's Autocavan Rallycross engine. I'm lead to believe the engine was a 2110 (90.5x82), 40x30 valve heads if that helps with identification.
I was just wondering if anyone knows anything about the specifications of these cams such as duration and lift etc. Would it have been used with stock ratio rockers or others?
Any help would be greatly appreciated. Thanks!
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Rennsurfer
Hero Member
Posts: 7391
D.B.O. Not a club; a state of mind.
Re: Sig Erson Camshafts
«
Reply #1 on:
March 19, 2009, 00:17:55 am »
According to Keith Seume:
"Sig Erson VW-210 camshaft offered 0.466in lift at the valve (with 1.5:1 ratio rockers) and 322 degrees of duration. It was described as "a high lift mid-range and top-end power camshaft offering broad power range in fully modified engines over 1800cc". The timing is as follows: IO 51∞; IC 91∞; EO 91∞; EC 51∞"
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"You can only scramble an egg so many ways."
~Sarge
OldSpeed
Newbie
Posts: 46
1300 Addict.
Re: Sig Erson Camshafts
«
Reply #2 on:
May 27, 2009, 14:12:02 pm »
Quote from: DKK_Fred on March 19, 2009, 00:17:55 am
According to Keith Seume:
"Sig Erson VW-210 camshaft offered 0.466in lift at the valve (with 1.5:1 ratio rockers) and 322 degrees of duration. It was described as "a high lift mid-range and top-end power camshaft offering broad power range in fully modified engines over 1800cc". The timing is as follows: IO 51∞; IC 91∞; EO 91∞; EC 51∞"
Ah! Forgot about this thread.
Cheers for looking the above up for me Fred.
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OldSpeed
Newbie
Posts: 46
1300 Addict.
Re: Sig Erson Camshafts
«
Reply #3 on:
May 27, 2009, 14:24:16 pm »
For future reference, I managed to find a copy of an old Erson Catalogue with all the VW cam specs in:
I am slightly confused by the way it says all the cams are for stock ratio rockers but it also says the VW-210 should be used with high ratio for best results? This also conflicts with Keith Seume's info?!
«
Last Edit: May 27, 2009, 14:28:08 pm by OldSpeed
»
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Isaac Potter
Newbie
Posts: 13
Re: Sig Erson Camshafts
«
Reply #4 on:
May 27, 2009, 19:13:22 pm »
i have some vintage sig erson 1.5 rockers if your interested
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Fastbrit
Hero Member
Posts: 4732
Keep smiling...
Re: Sig Erson Camshafts
«
Reply #5 on:
May 28, 2009, 08:56:46 am »
Quote from: OldSpeed on May 27, 2009, 14:24:16 pm
For future reference, I managed to find a copy of an old Erson Catalogue with all the VW cam specs in:
I am slightly confused by the way it says all the cams are for stock ratio rockers but it also says the VW-210 should be used with high ratio for best results? This also conflicts with Keith Seume's info?!
If you look at the description of the VW210 it states "should have billet cylinder heads (!),
high-ratio rockers
…". Billet heads? Hmmm.
Anyway, the thing is that the cams could be used with stock rockers if you wished, but who would?
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Der Kleiner Panzers VW Club
12.56sec street-driven Cal Looker in 1995
9.87sec No Mercy race car in 1994
Seems like a lifetime ago...
volksnut
Full Member
Posts: 189
Re: Sig Erson Camshafts
«
Reply #6 on:
May 30, 2009, 18:06:21 pm »
I have a NOS Erson VW209 camshaft, anyone know the spec's of this gem?
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bill stipe
Full Member
Posts: 171
Re: Sig Erson Camshafts
«
Reply #7 on:
March 17, 2010, 18:45:22 pm »
Did Sig Erson offer two different lengths of pushrods, one for stock stroke and one for strokers? If so, would anyone know the lengths of each? I need some for a stroker, just thought they would be longer.
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rick m
Hero Member
Posts: 1296
Driving Hot VWs for 44 Years Strong!
Re: Sig Erson Camshafts
«
Reply #8 on:
March 19, 2010, 06:19:44 am »
Most engine builders cut the pushrods to the proper length for the rocker geometry. Deck height, stroke, etc., all play into the length of the push rods. If you are building a stocker, one size generally fits all, providing stock cam and rockers. When you start flycutting heads, shimming barrels, changing strokes, heads, rockers, etc., the pushrod lengths will need to be determined for the motor.
RM
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Rick Mortensen
Driving Hot VWs since 1970
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