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Mon Oct 03, 2011 10:43 am

I bought an 1300 F engine, but after I took it apart, I found that it´s a 1776(90,5mm) :)
It has a ERSON camshaft. Can anyone help me to understand the shaft?
I dont know mutch about camshafts :)
Are my shaft something for my 1776, daily driver in a bus.

I think it says : ERSON, VW40, 374, S2, 06, 738 ?

Mon Oct 03, 2011 11:18 am

lasslo
here some body in the classified that has a Erson VW30 cam for sale and they have a picture of the cam card, yours should be a step up, how much I do not know. hope this helps.
http://www.thesamba.com/vw/classifieds/detail.php?id=1106102

Casey

Mon Oct 03, 2011 12:16 pm

Dang, that is one bad ass cam! 288 duration - has to be at 0.050". 70 degree ABDC intake close. Pure race, and that's just the VW30, the VW40 might be even more cam. :shock:

Mon Oct 03, 2011 2:07 pm

Thanks for the info.

DarthWeber - So you mean that the shaft is too heavy to drive as a daily in my bus :cry:
Dam.. than I´ll have to get an eagel w110 or something simular to that?

Mon Oct 03, 2011 4:10 pm

Yeah, unless you are building a pure drag race 1776 then that cam appears to be waaaaaaaaay too much. Not saying you couldn't run it on the street though, but in a Bus??. I had a friend that ran a 2180 with an Engle FK-89, pure race cam, and he daily drove it! Funny thing was that cam was absolutely flat below 5k, so it actually was like driving a stocker 1600.

You know, you can measure the lift of the cam lobes also, this would give us an idea of how radical that VW40 cam is. Figure it was ground for ratio rockers so it might have something like 0.440" - 0.450" lift at the lobes. Just for reference, an Engle FK-97 cam has 328/287 duration and 0.443" lift at the cam.

Tue Oct 04, 2011 5:51 am

DarthWeber wrote: Dang, that is one bad ass cam! 288 duration - has to be at 0.050". 70 degree ABDC intake close. Pure race, and that's just the VW30, the VW40 might be even more cam. :shock:

Take another look at the cam card. It looks like that cam card is 'running duration' numbers,not .050 and the lift is @ the valve. The VW30 specs out more like an E-110. I would suspect the 40 is closer to a 120 but my info on Erson is not complete. I tried to match it with my SLR/Erson numbers but nothing looks close.

Tue Oct 04, 2011 7:00 am

Dougy Dee wrote: DarthWeber wrote: Dang, that is one bad ass cam! 288 duration - has to be at 0.050". 70 degree ABDC intake close. Pure race, and that's just the VW30, the VW40 might be even more cam. :shock:

Take another look at the cam card. It looks like that cam card is 'running duration' numbers,not .050 and the lift is @ the valve. The VW30 specs out more like an E-110. I would suspect the 40 is closer to a 120 but my info on Erson is not complete. I tried to match it with my SLR/Erson numbers but nothing looks close.

That's what I thought at first too, Doug, but the 70' ABDC intake close led me to believe that Darth is right. Most cams with mid 280ish adv dur have an intake close figure around 48-50' ABDC. I could still be wrong (ask my wife; it wouldn't be the first time! :lol: ).

Tue Oct 04, 2011 9:33 am

ALB wrote: Dougy Dee wrote: DarthWeber wrote: Dang, that is one bad ass cam! 288 duration - has to be at 0.050". 70 degree ABDC intake close. Pure race, and that's just the VW30, the VW40 might be even more cam. :shock:

Take another look at the cam card. It looks like that cam card is 'running duration' numbers,not .050 and the lift is @ the valve. The VW30 specs out more like an E-110. I would suspect the 40 is closer to a 120 but my info on Erson is not complete. I tried to match it with my SLR/Erson numbers but nothing looks close.

That's what I thought at first too, Doug, but the 70' ABDC intake close led me to believe that Darth is right. Most cams with mid 280ish adv dur have an intake close figure around 48-50' ABDC. I could still be wrong (ask my wife; it wouldn't be the first time! :lol: ).

That is correct but that cam card is advertised duration not .050 duration.

Tue Oct 04, 2011 9:55 am

just degree it and you dont have to guess any more.

Tue Oct 04, 2011 11:47 am

According to this cam calculator it's 288 at .050

http://www.wallaceracing.com/camcalc.php

The duration it spits out is always at .050.

With those open/close times and 76 degrees of overlap, it's waaaay bigger than a 110. By the specs on that cam card, it's similar to a Web 277.

Tue Oct 04, 2011 1:00 pm

MinamiKotaro wrote: According to this cam calculator it's 288 at .050

http://www.wallaceracing.com/camcalc.php

The duration it spits out is always at .050.

With those open/close times and 76 degrees of overlap, it's waaaay bigger than a 110. By the specs on that cam card, it's similar to a Web 277.

All that calculator does is take the IO/IC events that you put in and add 180 degrees. If those are in fact .050 numbers it would work out to 288. If those are advertised numbers it works out to 288. Most of the old Erson numbers Ive come across are advertised numbers like on the classified cam card.