Quidam Posted October 14, 2011 Share Posted October 14, 2011 36 peaks, 36 valleys. 360*. Peaks 10*, valleys 5* each. Basically, insert one of these in the hole where the dowel pin holds the sprocket. Chose 2*, 4*, 6*, or 8*, advance or retard. I've modified two and messed them both up. 7/32" chain saw file to slightly elongate the three bolt holes. I used other means and it didn't work out. Doug Quote Link to comment Share on other sites More sharing options...
Quidam Posted October 18, 2011 Author Share Posted October 18, 2011 (edited) My first set of Adjustable Cam Sprockets. Bushings for small and big block Chevy, BB Chrysler. Sprocket #3 with 8* bushing. Sprocket #4 will be drilled a little differently. Tightening up clearances. I need to check this all out further with a degree wheel. I'm drilling two cams and installing 6mm 1.0 threads for stud and nut where the factory roll pin lived. I can't use that at all. Possibly a longer pin with a different set of bushings. On set #2 I'm installing studs. Edited October 18, 2011 by Quidam Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted October 18, 2011 Share Posted October 18, 2011 and the advantages of Using those is... ? I'm not Completely Sure... Quote Link to comment Share on other sites More sharing options...
El Presidente Posted October 18, 2011 Share Posted October 18, 2011 Its for adjusting the cam timing, which can dramaticly change how a motor runs including moving the power band and complementing a boosted intake charge....I have no idea what it would do to a EA82, but I'm curious to know what this would do to my Weberized EA82.....hmmm.. I'm very interested to see where this goes, please give us a status report when you get them installed! Quote Link to comment Share on other sites More sharing options...
Quidam Posted October 19, 2011 Author Share Posted October 19, 2011 (edited) The set going on the motor to check it all out. Piston to valve, quench, valve timing... with a degree wheel. You can see the bolt hole slots only need to accomodate 8* advance or retard. These studs have a shoulder that fits pretty good to the bushing, but it's not a friction fit to it or bushing to sprocket. It could be. This is the 0* bushing that will go on the motor first. Shown with a stock size roll pin. I can make adjustments and go for friction fit on the next set. Doug I ordered this and some low tension Comp Cams checking springs. They were quite a bit cheaper than the JEGS house brand. Those guys are right up the road and are now building and leasing Pro Stock motors. $50,000 per weekend if you wanna rent one. They install it and remove it when it's over. Yeow Edited October 19, 2011 by Quidam Quote Link to comment Share on other sites More sharing options...
Quidam Posted October 19, 2011 Author Share Posted October 19, 2011 and the advantages of Using those is... ? I'm not Completely Sure... To find any power that can be had. I've read reports of 40 hp gain on a high powered Subie. I've witnessed the gain on a SBC. I use them to gain cranking compression sometimes... Doug Quote Link to comment Share on other sites More sharing options...
Quidam Posted October 20, 2011 Author Share Posted October 20, 2011 I will be installing this set on the motor. Quote Link to comment Share on other sites More sharing options...
zukiru Posted November 10, 2011 Share Posted November 10, 2011 ooh great idea! you guys know where to get a high rev cam? subscribed. Quote Link to comment Share on other sites More sharing options...
zukiru Posted November 11, 2011 Share Posted November 11, 2011 (edited) Do you really need the bushings? I had adj cam gears on my old zx2 and the bolts held it in place just fine. Really all it needs is the slotted holes, right? (and the index marks of course.) :edit: after reading your other thread I got my answer. Edited November 11, 2011 by zukiru Quote Link to comment Share on other sites More sharing options...
Txakura Posted November 11, 2011 Share Posted November 11, 2011 ooh great idea! you guys know where to get a high rev cam? subscribed. Delta Cams Quote Link to comment Share on other sites More sharing options...
mm88swrt Posted November 11, 2011 Share Posted November 11, 2011 Delta Cams delta cams has a "stage one grind" for about 73.5 per cam, with a $20 core for each. or a "stage two" grind for about 82.50 a piece. i just talked to them yesterday and shop turn around time right now is about a week! delta cams (tacoma, washington) 1800-562-5500 Quote Link to comment Share on other sites More sharing options...
mm88swrt Posted November 11, 2011 Share Posted November 11, 2011 delta cams has a "stage one grind" for about 73.5 per cam, with a $20 core for each. or a "stage two" grind for about 82.50 a piece. i just talked to them yesterday and shop turn around time right now is about a week! delta cams (tacoma, washington) 1800-562-5500 Quote Link to comment Share on other sites More sharing options...
Quidam Posted November 11, 2011 Author Share Posted November 11, 2011 Yea, Delta is the ONLY source for regrind/aftermarket cams for these cars that I know of. However, keep in mind that the MPFI XT cams are 256* duration, compared to 244* duration for the SPFI cams. I'd take an educated guess that they can grind more duration into the XT cams tho. Same lift on both as far as I know. About .396. Doug Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted November 16, 2011 Share Posted November 16, 2011 To find any power that can be had. I've read reports of 40 hp gain on a high powered Subie. I've witnessed the gain on a SBC. I use them to gain cranking compression sometimes... Doug Could I Kindly ask if you already installed those on the engine, and how is the whole setup Working? Kind Regards. Quote Link to comment Share on other sites More sharing options...
zukiru Posted November 16, 2011 Share Posted November 16, 2011 (edited) Could I Kindly ask if you already installed those on the engine, and how is the whole setup Working? Kind Regards. you won't notice much from this without an upgraded cam. not on a little 4-banger. it can make intakes and exhaust upgrades a bit more efficient if you put the time in to tune it. Edited November 16, 2011 by zukiru Quote Link to comment Share on other sites More sharing options...
El Presidente Posted November 17, 2011 Share Posted November 17, 2011 Could I Kindly ask if you already installed those on the engine, and how is the whole setup Working? Kind Regards. X2 I'm curious to know how it turned out too! you won't notice much from this without an upgraded cam. not on a little 4-banger.it can make intakes and exhaust upgrades a bit more efficient if you put the time in to tune it. If you have done this and it doesn't work, please share... I've seen this done to a couple stock motors( even a few 4cyl.'s) with stock cams and all had new attitude and power. Quote Link to comment Share on other sites More sharing options...
zukiru Posted November 17, 2011 Share Posted November 17, 2011 (edited) I have done it to other motors and the gains were small if any I have seen 5 HP gained on a dyno from just cam gears. this was a Zetec Focus engine. (not mine, car had a full range of bolt ons and igniton mods) I had gears on my Escort zx2. but I never got to mess with them much. the Escort 4 door I had, had a SOHC and I may have gotten the powerband moved to a better place for the 4 speed auto. but it still wasn't anything to write home about. (both cars had intake/exhast/homebrew ECU tuning) don't get me wrong. I am going to do this myself. but I don't expect much. :edit: some times cams on one car are more "on" than in other cars. some cars may already have the lobes so perfectly in the sweet spot that this mod could hurt performance... Edited November 17, 2011 by zukiru added info Quote Link to comment Share on other sites More sharing options...
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