I broke in the cam with valvoline vr1 20-50w and a bottle of lucas break-in additive. I was sweating it big time! The cam is a flat tappet .575 lift 250 duration @ .05 on a 106 lsa. 11.7-1 comp. As soon as the engine fired I revved it to 3000 rpm. I fluctuated the rpm from 3000 to 2500 for 30 min. This a budget type motor. 200 cc heads, flat top claimer pistons, stock crank, eagle rods, msd ignition, dual edelbrock carbs.The more I work with the edelbrock carbs the more i like them... I ran the motor on 110 octane gas. We have about 30 guys in our car club that all use this form. Thanks for all the past help!
Impressed you got that lift to work out a d edelbrock carbs to run well with that duration. Which carb model? They can be tricky with larger duration cams.
The carbs are 500 cfm (each). The intake is the old edelbrock c-26 (for looks). The linkage is progressive. I did not touch the carbs! They ran great for the break-in. (The engine was run on a break-in stand.) The block is filled with hard block to the side freeze plugs. It ran cool the whole time at 180 ish. The heads are world products sportsman 2's, I know they are sub-par head today, but I had these in stock and they were professionally pocket ported. This whole motor was done on a pretty tight budget and still cost a lot... The cam is from comp. It is a custom grind. The springs are from Howards: Dual type with 135 on the seat 285 open pressure. I ran these springs with comp stainless 1.6 rockers. This is my first complete motor build I did myself. I used a chevy Z-28 oil pump and matching pan with tray from G.M. I used arp fasteners on everything. I now want to convert the carbs to run on E-85. The only carb guy that I could find that does edelbrock conversions is in Minnesota at a cost of $300 each! Ouch! I cannot find kits or info on how to do the work myself... I was told the carbs are too small for this size engine, but they are what I had purchased from another club member for a great deal. So, I ran what I had" ... I am planning on putting on 1 inch carb spacers next. I have the break-in video from a smart phone that looks great, unfortunately I am currently not smart enough to know how get the video to post here. I sent it to my email, but that is as far as I got with it...
Again thanks to the everyone on the forum, your posted info helped a bunch. Most of the guys in our club did not think the engine combo would work as well as it does. I am pretty stoked!
No synthetics for the life of the engine.A race oil like Joe Gibbs for every oil change after the break-in.We have seen lobe failures many miles later with the wrong choices.
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