RTB Posted September 5, 2013 Report Share Posted September 5, 2013 Are they to be trusted? Talked to the guy selling them and he uses an original as a master key then gets nos cams matched to that master key. Thoughts? Worth getting to get some more torque and power. 2 Quote Link to comment
banzai510(hainz) Posted September 5, 2013 Report Share Posted September 5, 2013 Don Potter used to be the Man on these I talked to him years ago. Made it sound like his cams with dual SUs would beat Honda Vtecs. But alwasy really wondered if it was a sales pitch. Dont know if hes still aorund. soem cam grind specs would be nice and verify they are per spec with a dial guage Quote Link to comment
RTB Posted September 5, 2013 Author Report Share Posted September 5, 2013 Don potter passed away. I think a few years ago. Quote Link to comment
Cheater Dan Posted September 7, 2013 Report Share Posted September 7, 2013 I'll vouch for Dons cams. I used them on a couple of racing motors, well maybe more than a couple. Once we got dialed in on the grind they were unbeatable. Great guy to talk to,knew his stuff. Like Hainz says though,he kinda stretched it a bit sometimes. But he could walk the walk. Don't know about that E-Bay stuff though. Dan Quote Link to comment
deweyharding Posted September 7, 2013 Report Share Posted September 7, 2013 I know the ebay seller. He bought the last of Don's stuff from his widow. He is a very reputable guy. Quote Link to comment
RTB Posted September 7, 2013 Author Report Share Posted September 7, 2013 Thanks. I drove out and traded some parts with him. Seemed like a nice guy. I just thought it would be a good idea to double check. Quote Link to comment
banzai510(hainz) Posted September 7, 2013 Report Share Posted September 7, 2013 Don Potters name hasnt been mention in years on any forum. Glad he is still remembered. If these cams are that good they should sell well if any L motors are still around. Just make sure the specs come out correct and have them measured. I got cams from Delta Camshaft out of Tacoma,Wa and they were not per spec(regrinds). I gave them away or use them to see if cam towers are straight in a head Quote Link to comment
RTB Posted September 8, 2013 Author Report Share Posted September 8, 2013 Say it is a regrind. If it was taken to the exact specs of the master cam would it be acceptable? Or would it fail? Quote Link to comment
banzai510(hainz) Posted September 9, 2013 Report Share Posted September 9, 2013 should be accetable or very close depending on quility of the caliper used. example my Delta cam was lifted at 460 lift and cam out to like 410 lift after figureing the rockaer ratio and zero lash Quote Link to comment
datzenmike Posted September 9, 2013 Report Share Posted September 9, 2013 Stock L20B cam will lift valves 0.413" 248 duration. The duration is likely not measured at the 0.050" lift like most so hard to compare. Quote Link to comment
zat Posted March 18, 2014 Report Share Posted March 18, 2014 so guys is the ebay stuff a yay or nay? m updating my wishlist Quote Link to comment
RTB Posted March 18, 2014 Author Report Share Posted March 18, 2014 I think Steve, the seller, is a good guy. My engine is still being built so I can't comment on that, but he's very nice and helpful. Quote Link to comment
pl521sss Posted October 7, 2014 Report Share Posted October 7, 2014 Anyone here have purchased this cam and tried it? Quote Link to comment
RTB Posted October 8, 2014 Author Report Share Posted October 8, 2014 I purchased it. Steve Bonk is a very good guy and I recommend all his stuff. Quote Link to comment
Stoffregen Motorsports Posted October 10, 2014 Report Share Posted October 10, 2014 The only way to know for sure what the grind is is to send it off to a cam grinder and have it spec'd. Short of that, if the cams are stamped and come with a corresponding cam card, that's the next best. If you're buying cams from some guy who bought them from a widow of an old cam grinder, buyer be ware. Don't mistake my warning for trash talking. Steve Bonk could have been sold a box of rejects without knowing. Someone should buy one and have it spec'd. Then we'd know for sure. Quote Link to comment
housew Posted October 10, 2014 Report Share Posted October 10, 2014 or steve should supply one to be speced or get one speced so he can provide specs with the cams hes trying to sell, cause then he'd probably sell a lot more of them. just a good business move. Quote Link to comment
*fart* Posted October 27, 2014 Report Share Posted October 27, 2014 Ive been trying to research some cam info for my 74 L18. When you guys get bigger cams, is it necessary to upgrade valve springs retainers etc? Or can you expect some life out of a stock head/motor with cams/carb/exhaust? Quote Link to comment
scooter Posted October 27, 2014 Report Share Posted October 27, 2014 if its a small upgrade from stock, you'll be fine with the stock springs and retainers. just check your rocker arm wipe pattern. its not a life expectancy problem, its a coil bind/valvetrain geometry issue usually. you could just buy an isky kit and be done with it, you'll have to get lash pads from schnieder or another company. if you cant get lash caps tall enough manley makes 8 mm valve lash caps that fit nicely on the valve tips, and they wont hit the keepers unless your valve tips have been ground severely. these will raise your lash pads up 80 thou. a word of caution, with the isky retainers and manley valve tip caps, and the tallest schnieder lash caps, the lash caps are sticking out of the retainers pretty far. I havint had an issue yet, just something to look out for. if your uncomfortable with doing that you may be able to find retainers that will hold bigger lash pads... im running a isky z-196 grind, it appears that this setup works with theyre bigger grind too. this is probably way bigger than you need, but im feeding a 2.3 Quote Link to comment
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