Texasstar
Can't is a four letter dirty word
yep steelsimo said:Tight!!!
Is the 160 chambers not aliminium?
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yep steelsimo said:Tight!!!
Is the 160 chambers not aliminium?
q you know Zeke comes from a lineage of nitro methane heat is our enemy and you are our friend.Q said:might consider using a high temp protection product for the piston and combustion chamber...
http://www.cerakotehightemp.com/finishes/C-186Q/piston-coat/
for the piston skirts, (and other possibilities) micro slick
http://www.cerakotehightemp.com/finishes/C-110HQ/micro-slick-dry-film-ceramic-coating/
heat dissipation
http://www.cerakotehightemp.com/finishes/C-187Q/transfer-grey-air-cure/
there's a couple certified Cerakote applicators in your area... or do it yourself (read their MSDS sheets)....
or send to swaintech http://swaintech.com/
or do nothing...
Texasstar said:yep steel
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Yes...We have options it will be interesting to see what this chamber cc's out at with the Hispeed Pistons. So we used 175 valves in the 160 head, 26mm intake and 23mm exhaust. The 175 valves are shorter than the 160 valves. R/D sent us some lash caps to get to the correct geometry. However our previous flow bench data was without the lash caps. We know by the data the 200 head breathes better but this will be interesting to see what the data is now that we have the lash caps in...I think we will take some clay and raise the floor on the exhaust port to see what happens...we may need to go back in and weld the floor up on the exhaust. We were 11.38:1 on compression when we cc'd the 160 head using Victoria's engine. The nice improvement with these Pistons is not having to deck so much to bump up the compression. We know that the flame propagation issue is solved with the lower domes. I like to think we are gaining a kiwi mindset. How do we improve this without just throwing money at the problem.simo said:I wonder if that would make it easier to alter the chamber shape?
the Texans are coming!simo said:Here you go,
that is cool! I will show Zeke later! He likes old engines! https://youtu.be/fo9MB1SmW8ksimo said:Well of subject but this came into work the other day
Its an aircraft engine built in 1902, flow in march 1903
https://en.m.wikipedia.org/wiki/Richard_Pearse
thanks Crazypj! We pulled the stock 160, 175 retainers and 200 retainers and springs out for comparison. The steel retainers have .015-.020" of play between the retainer and spring. The RD titanium has .0005" play. Also the 160 retainers and springs are quite a bit bigger and heavier than the 175 retainers and springs.crazypj said:It sounds like you need a valve spring tester ;D
http://www.summitracing.com/parts/pro-66834/overview/
Really need some sort of press and a way to measure height but much cheaper than a professional version
that one got better reviews on Amazon! Thanks I think we are going to order it.crazypj said:I totally forgot there used to be a lot more information in service manuals
Looks like the single Yamaha spring will be stronger than stock 160 springs anyway.
BTW, linked the wrong spring tester, they do a 0-300lbs one as well