sangheraent Posted April 10, 2016 Report Share Posted April 10, 2016 Ok so long story I had my motor built buy a shop at the dunes and it sucked bad detonated everywhere ran like poo and was very slow. So I sent that motor off to Kevin at HJR and he went over it and re-ported it and cut me a new dome. Turn around time was OK not the 10 days it says but other then that everything was perfect. My motor before could not keep up to a stock yfz not even close, now my bike is neck and neck with a piped and tuned YFZ450r while he was running 20" tires and I only had 18" both stock gearing I had balding tires and his were mint on a fresh cut hay field. I'm happy with that, I was getting annoyed being miles behind everyone. my motor is a Procross 310 cylinder with a +4mm crank. 3rd bike he has ported for me and been happy with all of them. Quote Link to comment Share on other sites More sharing options...
2strokesmellgud Posted April 11, 2016 Report Share Posted April 11, 2016 Put a ftz pipe on it ull love the power it gives 1 Quote Link to comment Share on other sites More sharing options...
sangheraent Posted April 16, 2016 Author Report Share Posted April 16, 2016 I got a sparks pipe on it now runs good, I just bought a trx9 pipe Im going to try that out. Quote Link to comment Share on other sites More sharing options...
SandSlingerOR Posted April 18, 2016 Report Share Posted April 18, 2016 Sparks are good pipes. I also want to switch to a 9b from esr, I have a lrd on my esr 310 & it's definitely holding it back on the upper end Quote Link to comment Share on other sites More sharing options...
2strokesmellgud Posted April 18, 2016 Report Share Posted April 18, 2016 Watch out for those esr pipes had 2 buddies light seize pistons with those 1 was a 350cc with trx5 pipe the other was a esr 310 with trx11 pipe. Something about the diameter of the inside area being too small on their pipes Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted April 19, 2016 Report Share Posted April 19, 2016 ^ why would any pipe cause a seizure? Up to the guy tuning it to make sure all is well. Quote Link to comment Share on other sites More sharing options...
registered user Posted April 19, 2016 Report Share Posted April 19, 2016 if the stinger diam is to small it can put excess heat back into the piston causing all sorts of problems. guys more familiar with hondas like jerry hall and maybe even arlen do modify the stingers on some esr pipes depending what engine its used on maybe theyve fixed it now but the older esr jugs i seen had crappy water jacketing which was probly partly to blame for troubles folks were having Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted April 20, 2016 Report Share Posted April 20, 2016 Pretty much the same problem you run in to running small bores on a super cub all day in the dunes. Quote Link to comment Share on other sites More sharing options...
sangheraent Posted May 9, 2016 Author Report Share Posted May 9, 2016 so update this motor flat out rips, It has maybe 5% more power with the esr9 pipe but the damn thing wont seal because of my cr500 linkage. So I am back with the sparks MX pipe which to be honest is not bad. Bike is again neck and neck on the dunes with a piped and tuned yfz450r actually 3 of them. If I get a good start I can win by a hair but I'm bad at drags. Its not too bad on fuel nothing like the old banshee I used about 11 gallons on our trip but that counts the 2 gallons still in the fuel tank so really its 9 gallons. Quote Link to comment Share on other sites More sharing options...
SandSlingerOR Posted May 10, 2016 Report Share Posted May 10, 2016 Right on brother, I can't wait to get a esr9 & the fuel customs intake for my 250r. Quote Link to comment Share on other sites More sharing options...
lucyjohn987 Posted July 11, 2019 Report Share Posted July 11, 2019 Spark pipes are pretty good Quote Link to comment Share on other sites More sharing options...
Sully78 Posted October 31, 2020 Report Share Posted October 31, 2020 Like someone above said......go FTZ and forget about all the rest! Jon makes some badass trx powerSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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