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Why is my 4g64 w/Evo VIII Head Perfectly in Time?

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Old Jun 12, 2012 | 03:37 PM
  #76  
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I was just makin' a joke. But seriously....I tried them the other way and failed...I don't know why that's so hard to believe.
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Old Jun 12, 2012 | 03:42 PM
  #77  
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idk could have put the 63 belt on a tooth back too.

in any event, belt tight and things lined up, good enough
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Old Jun 12, 2012 | 03:46 PM
  #78  
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Originally Posted by Anarchy99
The dowel pins are not in the right holes. Period. Overlay a stock gear on the DSM hole of the Fidanza and you will see it DOES NOT line up. It is a tooth off. Its very simple. A DSM hole Fidanza is true ZERO is at -7.5* on the gear on an Evo.
I have parted two evo cars with fidanza gears. they both had the dowels installed in the hole not labelled for evo. I believe the holes were labelled backwards. they may have corrected this issue on later runs of the gears. so you both may likely right. I havent bought any new fidanza gears in the last five years so I cant verify for sure.
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Old Jun 12, 2012 | 03:48 PM
  #79  
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Originally Posted by akauf
both rotate clockwise.

with the 63 belt installed you ended up -3.75. it was supposed to be +3.75. take out the -7.5 from the cam gear being in the wrong hole and it sounds like the belt is on right

maybe your not getting all the slack out of the 64 belt
dude please stop talking or prove what you are saying is correct. you are proving to be a moron at this point.
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Old Jun 12, 2012 | 03:49 PM
  #80  
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Originally Posted by akauf
both rotate clockwise.

with the 63 belt installed you ended up -3.75. it was supposed to be +3.75. take out the -7.5 from the cam gear being in the wrong hole and it sounds like the belt is on right

maybe your not getting all the slack out of the 64 belt
It sounds like he is a half tooth off at the crank pulley. He never showed a pic of where the crank pulley was set. Its easy to get the cam gears to line up but if you are off a half tooth at the crank, once it lands on the "T" mark, the gears at the cams are probably off 3.75*. I think he is +7.5 for the DSM hole, and then put the belt -1 tooth by accident, netting marks that line up at the cams but are slightly off at the crank, not yet set exactly on the T mark on the cover.
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Old Jun 12, 2012 | 03:55 PM
  #81  
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Originally Posted by 94AWDcoupe
I have parted two evo cars with fidanza gears. they both had the dowels installed in the hole not labelled for evo. I believe the holes were labelled backwards. they may have corrected this issue on later runs of the gears. so you both may likely right. I havent bought any new fidanza gears in the last five years so I cant verify for sure.
Its a mistake I've seen a lot. The cars run fine but they spoolup faster than normal, can't take normal ignition timing and are down on power a certain percentage. Once dowels switched the power comes back, the powerband naturally moves to the right and the power rises.

I'm sure there are many Evos running around that have always been on the wrong holes, never at their full potential. Its a stupid design by Fidanza and makes them look like they are installed most correctly on the DSM holes when the adjustment marks are at the top.

When on the Evo holes, you have to turn the gear 90* with the adjustment marks on the right side and a small tick on the left of the gear becomes the new timing mark.
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Old Jun 12, 2012 | 04:02 PM
  #82  
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Originally Posted by Anarchy99
Its a mistake I've seen a lot. The cars run fine but they spoolup faster than normal, can't take normal ignition timing and are down on power a certain percentage. Once dowels switched the power comes back, the powerband naturally moves to the right and the power rises.
Isn't that funny that the exact symptoms you're describing were the exact symptoms I had when my dowels were in the Evo hole.

Hmm......what a coincidence.
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Old Jun 12, 2012 | 04:07 PM
  #83  
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Originally Posted by Anarchy99
It sounds like he is a half tooth off at the crank pulley. He never showed a pic of where the crank pulley was set. Its easy to get the cam gears to line up but if you are off a half tooth at the crank, once it lands on the "T" mark, the gears at the cams are probably off 3.75*. I think he is +7.5 for the DSM hole, and then put the belt -1 tooth by accident, netting marks that line up at the cams but are slightly off at the crank, not yet set exactly on the T mark on the cover.
Why are you even in this thread? Now I'm angry. We were all settled and you had to come in and somehow try to prove that everything I've done is wrong.

I timed the * car 30 times with the same result. Who gives a * if I didn't post a * picture of the * crank pulley. The problem is solved. I was right. My motor lines up. It's off about a degree on each gear. We proved it on another 4g64 Evo today with Evo specific cam gears. My head's been cut 3 times. It's not off 3.75*. My dowel pins are in the correct hole.

The problem is solved. I got my answer.

Thank you EVERYONE for your help in this thread. I'm done posting in it, as I've learned a ton.
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Old Jun 12, 2012 | 04:23 PM
  #84  
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Originally Posted by 94AWDcoupe
dude please stop talking or prove what you are saying is correct. you are proving to be a moron at this point.


hey man, come on, all I'm saying is if he switches the two sprockets. In to ex, ex to in it should work out fine. If not the 4g61 belt is the one that works out perfect every time on 4g64
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Old Jun 12, 2012 | 04:35 PM
  #85  
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had to go check these fidanza gears. I was certain we used the DSM holes and now I remember why. these fidanza gears are a night mare. they arent correct using either hole. the evo hole makes the mark off one half tooth. the dsm hole makes the mark a full tooth off. thats why I used the dsm hole. just move the mark over one tooth. cams are far closer to straight up that way.


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Old Jun 12, 2012 | 04:48 PM
  #86  
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Are these both on EVO Cam gear?
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Old Jun 12, 2012 | 06:00 PM
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Originally Posted by akauf
both rotate clockwise.

with the 63 belt installed you ended up -3.75. it was supposed to be +3.75. take out the -7.5 from the cam gear being in the wrong hole and it sounds like the belt is on right

maybe your not getting all the slack out of the 64 belt
Originally Posted by 94AWDcoupe
dude please stop talking or prove what you are saying is correct. you are proving to be a moron at this point.
Originally Posted by 94AWDcoupe
had to go check these fidanza gears. I was certain we used the DSM holes and now I remember why. these fidanza gears are a night mare. they arent correct using either hole. the evo hole makes the mark off one half tooth. the dsm hole makes the mark a full tooth off. thats why I used the dsm hole. just move the mark over one tooth. cams are far closer to straight up that way.

hmmm, now I'm just an unintelligent moron, but it really looks like the fidanza gear in the dsm hole is one tooth retarded by comparison to the stock gear. Now could this be why, when he timed it with the 63 belt, he came up a half tooth retarded instead of a half tooth advanced as I said before...

Last edited by akauf; Jun 12, 2012 at 06:02 PM.
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Old Jun 12, 2012 | 07:21 PM
  #88  
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thanks for posting that AWD. looks like i gotta go out and jump my fidanza gears 1 tooth backwards now

Last edited by burnzy; Jun 12, 2012 at 07:24 PM.
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Old Jun 12, 2012 | 08:13 PM
  #89  
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Originally Posted by 94AWDcoupe
the dsm hole makes the mark a full tooth off.


Thanks for confirming my statement.

And I am in this thread Blue91 because I have a 2.4L Longrod motor with Fidanza gears and its timed perfectly as I know what I am talking about.
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Old Jun 12, 2012 | 08:26 PM
  #90  
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Originally Posted by burnzy
thanks for posting that AWD. looks like i gotta go out and jump my fidanza gears 1 tooth backwards now
if you have a 2.0 then yes, I would use dsm hole and remark the outer gear one tooth to correct.

if you have a 2.4 block i would use evo hole. they should work great with half tooth off is just whats needed for the tall blocks. 3.75 correction. but you have to use the 3.75 in the correct direction or timing will be 1 tooth off.

very easy to make timing mistakes with these gears

Last edited by 94AWDcoupe; Jun 12, 2012 at 08:30 PM.
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