A few last questions for the engine builders here...
First I wanna say thanks to all the guys who jumped in with advice and pointers through the course of what has been a very trying and expensive year. And a special thanks to Rex, who has demonstrated saint like patience with my endless PM's while I fumbled through this whole process.
Ok. I bought an 1835 long block, built on an AS21 FI case, with a stock 1600 DP crank and rods, and an Engle W100 cam. The heads were from a 1600 DP, cut for the bigger jugs, with stock valves. I set it up with my 32/36 progressive carb, a 009 dizzy with points and a set of 1.25:1 HR rockers.
I didn't get a 1000 miles on the build and it cracked the head on the #1 cylinder, between the spark plug and intake valve. After some deliberation, screaming, cussing and tool throwing, I opted to get a new set of heads as opposed to rolling the dice on a set I had laying around. I picked these up yesterday. So $500 later, I'm ready to reassemble (again), but first a few questions for the experts so I don't build another rolling hand grenade.
1.) I'm putting this together to attain an 8.5:1 compression ration, or at least get close to that. What I have is a .055" average deck height with the heads cut to 50 cc's. I intend to keep running the 1.25:1 HR rockers over the aforementioned W100 cam. The question is, will this set up give me enough valve clearance to avoid a catastrophic collision between the valves and pistons, not to mention the subsequent screaming, cussing and tool throwing that would most assuredly ensue?
2.) Next question, is there a specific pattern one should follow when torqueing down the head nuts?
3.) Last, on a whim this evening, I measured the crank end play. This checked at .013". The question is, how much end play is too much?
Thanks again to the whole Trike Talk gang for your patience and understanding, and for making this a great place to visit!
PEACE and ride safe!
First I wanna say thanks to all the guys who jumped in with advice and pointers through the course of what has been a very trying and expensive year. And a special thanks to Rex, who has demonstrated saint like patience with my endless PM's while I fumbled through this whole process.
Ok. I bought an 1835 long block, built on an AS21 FI case, with a stock 1600 DP crank and rods, and an Engle W100 cam. The heads were from a 1600 DP, cut for the bigger jugs, with stock valves. I set it up with my 32/36 progressive carb, a 009 dizzy with points and a set of 1.25:1 HR rockers.
I didn't get a 1000 miles on the build and it cracked the head on the #1 cylinder, between the spark plug and intake valve. After some deliberation, screaming, cussing and tool throwing, I opted to get a new set of heads as opposed to rolling the dice on a set I had laying around. I picked these up yesterday. So $500 later, I'm ready to reassemble (again), but first a few questions for the experts so I don't build another rolling hand grenade.
1.) I'm putting this together to attain an 8.5:1 compression ration, or at least get close to that. What I have is a .055" average deck height with the heads cut to 50 cc's. I intend to keep running the 1.25:1 HR rockers over the aforementioned W100 cam. The question is, will this set up give me enough valve clearance to avoid a catastrophic collision between the valves and pistons, not to mention the subsequent screaming, cussing and tool throwing that would most assuredly ensue?
2.) Next question, is there a specific pattern one should follow when torqueing down the head nuts?
3.) Last, on a whim this evening, I measured the crank end play. This checked at .013". The question is, how much end play is too much?
Thanks again to the whole Trike Talk gang for your patience and understanding, and for making this a great place to visit!
PEACE and ride safe!
