Here are some pics of our new adjustable cam gears. These are billet aluminum and hard anodized. Our order is in production now and we'll have these available to ship in about 3 weeks. Production gears will be anodized black rather than the blue that the samples were done in. These will sell for $180 per pair
Great stuff Mark. Love your effort in adding aftermarket parts.
Now if the Canadian dollar gets close to the green-back, I can afford some of these parts.
80 FI spider
72 work in progress
2017 Golf R ( APR Stg. 1)
2018 F350 crew long box
Those look nice. I know what i"ll be getting should I ever build up an engine. I dont think they'd have too much of an effect on my stock engine.
not much, but they do have an affect. if you have skimmed your engine head at least once, when installing a timing belt you encounter a problem of tooth on tooth when everything is lined up ideally. adjustable gears help solve this.
So what would one expect if installing these on an otherwise stock 2L FI? Is there any appreciable gain to be made by fiddling with the cam timing on these cars? This would be a pretty easy "bolt on" modification. Can someone knowledgeable briefly discuss what general changes might be made (i.e. which direction for each; I/E) and if this alone would be appreciable? Thanks as always!
Pete
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
Pete, I have Mark's 274 cams on my FI with the adjustable cam gears. Before I had the gears/engine degreed in properly the car had a bit more zip. After the engine was degreed in, it was like a new car. As previously mentioned somewhere, I had the head shaved a tad when it was worked on so the original gears I suspect would not be just right in setting up the timing.
In my opinion, if one is to put the adjustable gears on, spring for a proper degreeing in of the engine. What it will do on an otherwise stock engine....I'm guessing it will make a bit of difference for the better.
80 FI spider
72 work in progress
2017 Golf R ( APR Stg. 1)
2018 F350 crew long box
I was thinking about getting the 274 cams. How is the idle with the Bosch FI? On my old spider I had a 40/80 cam only on the intake side. Idle was lumpy but it had a lot of pull.
narfire wrote:Pete, I have Mark's 274 cams on my FI with the adjustable cam gears. Before I had the gears/engine degreed in properly the car had a bit more zip. After the engine was degreed in, it was like a new car. As previously mentioned somewhere, I had the head shaved a tad when it was worked on so the original gears I suspect would not be just right in setting up the timing.
In my opinion, if one is to put the adjustable gears on, spring for a proper degreeing in of the engine. What it will do on an otherwise stock engine....I'm guessing it will make a bit of difference for the better.
The idle is fine. Not lumpy at all. Love the mid range, the car really starts to pull around 3100 RPM. 60 kph in 5th (some stupid speed zones here) and just a easy push of the pedal and I'm doing 100kph.
In my opinion one needs the adjustable cam gears as well and have it all degree'd in properly to really benefit.
Best upgrade to my engine.....
80 FI spider
72 work in progress
2017 Golf R ( APR Stg. 1)
2018 F350 crew long box
gotta disagree, we have many cars running our cams without adjustable gears. We've dyno'ed several of them and got solid 127-135hp with street cams and they're able to pass Calif smog checks too. I agree that adjustable gears are a definite plus, but not always necessary