Why is my 4g64 w/Evo VIII Head Perfectly in Time?
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.
dude please stop talking or prove what you are saying is correct. you are proving to be a moron at this point.
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.
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.
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.
Thread Starter
Joined: Aug 2011
Posts: 2,154
Likes: 5
From: Philadelphia, PA
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.
Hmm......what a coincidence.
Thread Starter
Joined: Aug 2011
Posts: 2,154
Likes: 5
From: Philadelphia, PA
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.
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.
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
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.


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.


Last edited by akauf; Jun 12, 2012 at 06:02 PM.
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.



