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Forum namePerformance/Engine
Topic subject0 Compression - How to tell if a cam is 180* out of phase?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=88987
88987, 0 Compression - How to tell if a cam is 180* out of phase?
Posted by JWoodley, May-05-05 10:58 AM
I'm in the middle of a timing belt job and I think that I may have a cam 180*s out. How can I tell? I'm about to remove the valvecover. Where do I go from there? I'm gonna sign on IM on my cell, so all help is appreciated!

My s/n is "Acid23rain". Thanks!
88988, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DarkOne, May-05-05 11:04 AM
Stock cams?

Make sure both locating holes point up. yes, its that easy.
88990, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by JWoodley, May-05-05 11:14 AM
Originally posted by DarkOne
Stock cams? Make sure both locating holes point up. yes, its that easy.


Yes, stock cams. I'm assuming the holes will be visibile with the valve cover off or do you mean the timing marks on the gears themselves. It'd be cool if you werent away on AIM. =)

Thanks!
88991, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DarkOne, May-05-05 11:18 AM
I am always away. But i am always there. get it?

The holes will be visible on the cam itself. They should both face up.
88992, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by InFiNiT3, May-05-05 11:33 AM
ya bro they're about 4 " from the front of the head on the cam itself... very very ez..... there's also a tool out there that will grab the holes and line em up for ya.... but u can do it w/o spending 200$ for it lol I have one but i jacked it from satan (work)

MrInFiNiT3
aka
Tha ATX GOD

02:19:18pm DarkOne> They'd have had to brought a whole fucking JUG of KY.
02:19:28pm InFiNiT3> lol no shit
02:19:39pm DarkOne> and a funnel.
02:19:45pm grain> have to get the ky with warming
02:20:00pm InFiNiT3> i feel sorry for the 18 y/o (one was 17 one 18) his name was plaster'd all over the news n news paper
02:20:06pm DarkOne> Yeah, has to be warming.
02:20:06pm BuckNutty> jus spit on it and it'll go in
02:20:17pm InFiNiT3> aye the ky w/ warming any good>
02:20:45pm grain> never tryed it
02:20:50pm grain> i applyed for a sample on thier website
02:20:56pm BuckNutty> evan didn't complain any
02:20:56pm BuckNutty> it felt nice
02:20:57pm InFiNiT3> lol
02:21:01pm grain> i use id glide whne she dries
02:21:06pm grain> good stuff
02:21:45pm InFiNiT3> thnx for the new sig guys
02:21:45pm DarkOne> Are we still talking about fucking dead chicks?
88993, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DarkOne, May-05-05 11:39 AM
Originally posted by InFiNiT3
ya bro they're about 4 " from the front of the head on the cam itself... very very ez..... there's also a tool out there that will grab the holes and line em up for ya.... but u can do it w/o spending 200$ for it lol I have one but i jacked it from satan (work)



Send me a pick of the tool. I've always wondered exactly what it looked like.
88994, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DJ420a, May-05-05 11:42 AM
Originally posted by DarkOne
Originally posted by InFiNiT3 ya bro they're about 4 " from the front of the head on the cam itself... very very ez..... there's also a tool out there that will grab the holes and line em up for ya.... but u can do it w/o spending 200$ for it lol I have one but i jacked it from satan (work)
Send me a pick of the tool. I've always wondered exactly what it looked like.


Same here. Im wondering if I can make one. I always threw a 1/4" ratchet extension in there to hepl hold the cam so I can tightn down the cam gear, lol.


88995, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by turbo8u, May-05-05 11:58 AM
hey jake what time will you be at work in the morning? since i have to come down anyway i can snag a picture of the tool for deenhoe...err, i mean dino :+
88996, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by JWoodley, May-05-05 12:13 PM
Well, the holes were aligned.


Sadly, 4 intake side lifters wiggle ontop of the valves when the lobes are not down, so I'm guessing this means I have 4 bent valves? Or am I way off? This car is starting to piss me off.
88997, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by turbo8u, May-05-05 12:14 PM
Originally posted by JWoodley
Well, the holes were aligned. Sadly, 4 intake side lifters wiggle ontop of the valves when the lobes are not down, so I'm guessing this means I have 4 bent valves? Or am I way off? This car is starting to piss me off.


theyre both facing UP....then well, you have a cam upside down home chicken

88999, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DarkOne, May-05-05 12:35 PM
Originally posted by turbo8u
theyre both facing UP....then well, you have a cam upside down home chicken


I thought on stock cams they both faced up regardless. are there two holes 180* opposed? I've never looked.
89000, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by turbo8u, May-05-05 12:58 PM
ok i think i confused everybody here. i was talking about the dowels on the cams to position the gear, in which case when the timing is right...one is up, one is down.

another way to tell if a cam is upside down is you'll have 0 compression on 2 cylinders and some on the other two.

89001, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DarkOne, May-05-05 01:04 PM
Originally posted by turbo8u
ok i think i confused everybody here. i was talking about the dowels on the cams to position the gear, in which case when the timing is right...one is up, one is down. another way to tell if a cam is upside down is you'll have 0 compression on 2 cylinders and some on the other two.


...and i was taking about the locating holes on the cam itself, both of which should, as best i can remember, face up.
89004, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by Star Turbo Talon, May-05-05 02:36 PM
you are absolutely right Dino the locating dowel holes do point straight up if the cams are degreed with stock settings.


Terry
88998, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by DR1665, May-05-05 12:15 PM
Of course, if you're still running stock gears (doubtful) the exhaust should have upside down text on it when the intake is right side up. :shrug
89005, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by XtremeRS, May-05-05 02:59 PM
Dont confuse the locating "holes" with the cam gear locating "dowels". The holes are in the camshaft itself, and the dowels actually are on the end of the cam, that position the cam gear onto the camshaft. The "holes" both face up, and the dowels, one faces down, and one faces up. If you have a loose rocker, then you have bent valves..you broke the timing belt right?
89014, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by JWoodley, May-05-05 05:46 PM
Originally posted by XtremeRS
Dont confuse the locating "holes" with the cam gear locating "dowels". The holes are in the camshaft itself, and the dowels actually are on the end of the cam, that position the cam gear onto the camshaft. The "holes" both face up, and the dowels, one faces down, and one faces up. If you have a loose rocker, then you have bent valves..you broke the timing belt right?


Yes, the belt broke on me. So each lose rocker is a bent, valve? Therefore I will need to replace 4 intake valves. What all must be replaced along with the valves themselves? I'm hoping I have not damaged any pistons.
89023, RE: 0 Compression - How to tell if a cam is 180* out of phase?
Posted by Star Turbo Talon, May-05-05 07:55 PM
Its been posted a shit load of times if your timing belt breaks you bend valves. You could have posted that in the beginning to save quite a few people some time.

Terry