lunatic Posted August 18, 2008 Report Share Posted August 18, 2008 (edited) My 350 ate a crank bearing and i put in a 4mm+5 crank in it now. It looks like i only need to machine about .050" off my squish bands to match the pistons but dont know what angle to cut the bands @? It had 19cc 12* domes in it and i thought instead of buying new domes all i could do is have a machinist cut the bands about .050" and correct the angle to match the blaster pistons and still have about a 18cc dome for cheap. Will this work and if so what angle and what ccs will my domes be after a .050" cut? Edited August 18, 2008 by lunatic Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted August 19, 2008 Report Share Posted August 19, 2008 well you probably are going to be like 1.5 deg greater on the squish band angle versus the angle from the piston crown edge to the piston top. piston angle is probably around like 12-14 deg. may i ask, why are you using blaster pistons? i don't know much about the stroker kits on banshees. i'm unsure of the cc size of the newly machined domes. if you have a burret, you can fill up the dome with engine oil and then know for sure the actual volume of the domes. it won't be the actual installed cc volume tho....remember that. i can machine the domes for you if needed. i'm a machinist and have access to the machines needed for the job. you just have to let me know how much you want off and where. let me know. Quote Link to comment Share on other sites More sharing options...
lunatic Posted August 19, 2008 Author Report Share Posted August 19, 2008 (edited) Ok what are all you cub guys using for domes im pretty sure they all use (573 series) blaster pistons? Vito says to use a 9* squish and trinity says 11*. Vito claims like a 3hp gain by using 9*? Edited August 19, 2008 by lunatic Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted August 19, 2008 Report Share Posted August 19, 2008 I wouldnt talk to trinity. They couldnt send me 2 same spark arrestors. Couldnt imagine dealing with them on engine parts. Call david noss at noss machine. Tell him what your doing and he would probably tell you what angle to cut your domes at. I believe my blaster piston domes were 75 bucks shipped from him if I remeber right. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted August 19, 2008 Report Share Posted August 19, 2008 Yea I just run 573 series pistons. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted August 19, 2008 Report Share Posted August 19, 2008 Well I got to thinking, with blaster pistons you should be running big bore domes as well. They have a different groove for the O ring to set in, it is a little farther out. 66mm to 68.5 bore needs big bore domes. So you might have sealing problems. josh Quote Link to comment Share on other sites More sharing options...
4stroker Posted August 19, 2008 Report Share Posted August 19, 2008 noss should be able to cut you some brand new domes to what ever specs you want, for $65 a pair... Quote Link to comment Share on other sites More sharing options...
lunatic Posted August 20, 2008 Author Report Share Posted August 20, 2008 noss should be able to cut you some brand new domes to what ever specs you want, for $65 a pair... [/quote Can he can cut me domes for my trinity head?? Quote Link to comment Share on other sites More sharing options...
shanYE west Posted August 20, 2008 Report Share Posted August 20, 2008 I use WSM banshee pistons.. I've had good luck with them so far... no problems at all... (knock on wood) Quote Link to comment Share on other sites More sharing options...
Guest utleybanshee Posted August 20, 2008 Report Share Posted August 20, 2008 I use WSM banshee pistons.. I've had good luck with them so far... no problems at all... (knock on wood) yea me 2 thats what nate likes to use.. Quote Link to comment Share on other sites More sharing options...
4stroker Posted August 20, 2008 Report Share Posted August 20, 2008 ah ok, its a trinity head. when i said he can cut whatever you want, i meant on the combustion chamber side. if the trinity head wont take the generic pro-design/noss domes, im sure noss will still machine your old ones for you if you send them to him. youd have to call and ask though. http://www.nossmachine.com/ if you dont have any luck there call Jim at passion racing, he will definitely be able to sort you out. www.passionracingengines.com Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted August 20, 2008 Report Share Posted August 20, 2008 Yea but he is still going to be running Small Bore domes when he should be running big bore. The O ring is moved out farther so it is less prone to leaking with the bigger bores. Quote Link to comment Share on other sites More sharing options...
_Hex* Posted August 20, 2008 Report Share Posted August 20, 2008 banshee piston is 10deg, these should be cut to 9deg Quote Link to comment Share on other sites More sharing options...
lunatic Posted August 20, 2008 Author Report Share Posted August 20, 2008 (edited) Yea but he is still going to be running Small Bore domes when he should be running big bore. The O ring is moved out farther so it is less prone to leaking with the bigger bores. The bore is only 66.50mm (.100") last bore on my sleeves and my domes are already 66.50 so no i dont need big bore domes. My domes are stamped 19cc 12* 66.50. Standard banshee 513 series domes are 12-14* not 10*. All im wanting to do is machine the squish band to the correct angle and set the squish @ .035-.040". So basicly cut the bands about .050" deeper not 2mm .080" cause the 573 has a .033" shorter compression height then the 795 series and change the angle from 12* to ??? is what im trying to figure out. My trinity head is cut @ 12* and my white knuckle is 14* So now do i have everyone confused cause im starting to confuse my self. lol Edited August 20, 2008 by lunatic Quote Link to comment Share on other sites More sharing options...
4stroker Posted August 20, 2008 Report Share Posted August 20, 2008 you are making perfect sense. i went to blaster pistons in my rz motor, but i machined 33 thou off the bottom of the jugs at the same time, otherwise my transfers woulda had too much duration. (they were already ported) to do it 100% right i would send your domes to jim smart at passion and have him do them. he has all the simulation software and the years of experience to know the exact squish width, angle and height that the domes have to be to achieve the proper MSV for your setup. if however, you just want the cheapest and quickest way out, machine them 50 thou deeper and set the angle at 3 degrees relative to the piston. you also have pm. mark Quote Link to comment Share on other sites More sharing options...
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