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effvee
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Joined: 05 Mar 2007
Posts: 537
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 Posted: Fri Apr 09, 2010 7:34 pm Post subject: 356 lifters |
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Hi everyone, I have a set of lifters that I had resurfaced and laser drilled oil hole. I plan to have the lifters cyroed at some point. I think the lifter can hold up for dual springs and a mild turbo grind. What do you all think? I don't want to re-invent the build up with Udo Beckers lifters, due to having the 356 lifters worked on. Also so my case has been re-bushed for the lifters.
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70Turbobug
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Joined: 18 Jun 2006
Posts: 1331
Location: Himmelpforten, Germany
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| Posted: Sat Apr 10, 2010 8:19 pm Post subject: |
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I don´t really see a problem with the 356 lifters,they should be able to tkae the pressure of the dual springs.Although the Udo Becker lifters are far superior...
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Surgeon General´s Warning: This vehicle is equipped with a turbocharger and may cause spinal injury during acceleration.
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effvee
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Joined: 05 Mar 2007
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| Posted: Sun Apr 11, 2010 5:46 am Post subject: Udo Becker |
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| Does Udo Becker make the his lifters in 356 size or just type one size? |
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effvee
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Joined: 05 Mar 2007
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| Posted: Thu Jun 10, 2010 3:30 am Post subject: EMW |
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Hi, I'm going to bit the bullet and buy a set of the 356 type lifter from EMW and have them laser drilled. I have a co-worker that had a type one engine using a 1" base cam. He said because of the ramp speed the lifter damaged his cam and engine. I'll buy the lifters after the heads are done.
Last edited by effvee on Sun Jun 13, 2010 4:19 pm; edited 1 time in total |
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70Turbobug
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Joined: 18 Jun 2006
Posts: 1331
Location: Himmelpforten, Germany
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| Posted: Sat Jun 12, 2010 1:09 pm Post subject: |
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| Quote: |
| He said because of the ramp speed the lifer damaged his cam and engine. |
My guess is that his lifter diameter was too small.He probably had a 26mm or 28mm instead of a 30mm face diameter.Cam lift and lobe seperation will determine overlap and ramp rate.For example you can have a fairly smooth ramp even with a base smaller than 1" if your lift and/or overlap are mild.If you have a small base circle and high cam lift and an aggressive lobe seperation angle i.e. 106° your ramp will be very steep and very quick off the seat.I would suggest a fairly large lobe seperation angle like 114° if you are to run a 1" base circle and keep the cam lift as low as possible and use ratio rockers to get the valve lift you want.Not only will this be easier on your valve train,it will be quieter and last longer and won´t eat your cam.
_________________
Surgeon General´s Warning: This vehicle is equipped with a turbocharger and may cause spinal injury during acceleration.
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