 Cam timing Part 2, wierd "stock" T4 cam, JAKE??? Anyone??? too high of lift??? |
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| Mark Henry |
 Jul 30 2004, 08:19 PM
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that's what I do!  Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada  |
This is my last post on Dylan's original thread, he thought that he installed a NOS VW/Porsche cam in his new rebuild....
Dylan's getting .330 lift at the cam. I measured a new Web 73 and I get .320 lift On the stock (used) cams I have I get about .275 at the cam, even less for a hydro. It does have a rivet on gear and I’ve never heard of an aftermarket cam with a rivet on. I’m at a total loss on this puppy. I’d hate to have Dylan rip out an OK cam, but things smell real fishy. This cam has me going WTF! (IMG:style_emoticons/default/unsure.gif) Is it a hipo regrind on a stock cam? His new engine with stock FI will not idle below 1500rpm You can read the original thread here: http://www.914world.com/bbs2/index.php?act...=ST&f=2&t=14964 |
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| F4i |
Jul 31 2004, 09:44 PM
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914 DOG! Group: Benefactors Posts: 482 Joined: 22-December 03 From: AB Canada Member No.: 1,460  |
More specs on the mystery cam. This is measured to the best of my ability.
Gap @ .040 intake opens 20 BTDC lobe center 106 ATDC intake closes 52 ABDC exhaust opens 53 BBDC lobe center 73 ABDC exhaust closes 14 ATDC Lobe centers shold be very accurate. Lobe lift at the pushrod is about .317 With the adjuster screwed in ti just touch the valve (no clearence) I got a lift of .411 So that leaves me totally confused as to what cam this is. It does go a long way in explaining why i cannot get the sucker to idle. Help??? Jake?? Anybody?? (IMG:style_emoticons/default/idea.gif) |
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Posts in this topic
Mark Henry Cam timing Part 2, wierd "stock" T4 cam Jul 30 2004, 08:19 PM
F4i Measured more accuratly It's .320 at the end o... Jul 30 2004, 11:07 PM F4i 912 cam? Euro carb motor cam? A metric speedo came... Jul 31 2004, 11:07 AM Brad Roberts I know of at least 3 places that hard weld cams (w... Jul 31 2004, 09:48 PM Brett W Here are the specs based on the info you have give... Jul 31 2004, 09:51 PM F4i Its still in the engine. I can pull the oil pump a... Jul 31 2004, 09:52 PM seanery Cam and lifters about $300. Cheap enough insu... Jul 31 2004, 09:59 PM F4i Have the lifter issues been resolved? Plus if its ... Jul 31 2004, 10:08 PM F4i Going by what brett is saying (thanks for doing th... Jul 31 2004, 10:46 PM Mark Henry Anyway you look at it, there is no easy or cheap s... Aug 1 2004, 07:51 AM Lawrence Well... Aug 1 2004, 08:28 AM F4i Lawrence The bunny is just what I need right now. ... Aug 1 2004, 10:04 AM Mark Henry I'm just running HD single springs, my engine ... Aug 1 2004, 10:56 AM
F4i Sorry I didn't mean SDS tunes itself. I meant... Aug 1 2004, 11:12 AM |
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