2-stroke-addict Posted June 26, 2021 Report Posted June 26, 2021 I recently acquired 421 serval cylinders with a mx port from redline. I know it would be best to run with a larger volume pipe! 'N have shearer small bore and 35pwk on my redline cub and making almost 100hp on pump gas. But since i got the dmc's and some 28pwk lying around thought 'n might just run them till I can get a set of bigger pipes and carbs! Wanting to know what can I expect from this setup? Pump gasVforce 4 reeds4° advance timing28 pwkDmc alien Sent from my SM-G986U1 using Tapatalk Quote
bluebanshee98 Posted June 26, 2021 Report Posted June 26, 2021 I recently acquired 421 serval cylinders with a mx port from redline. I know it would be best to run with a larger volume pipe! 'N have shearer small bore and 35pwk on my redline cub and making almost 100hp on pump gas. But since i got the dmc's and some 28pwk lying around thought 'n might just run them till I can get a set of bigger pipes and carbs! Wanting to know what can I expect from this setup? Pump gasVforce 4 reeds4° advance timing28 pwkDmc alien Sent from my SM-G986U1 using Tapatalk The dmc will run fine on a serval and the setup will be great for trail riding Sent from my iPhone using Tapatalk Quote
2-stroke-addict Posted June 26, 2021 Author Report Posted June 26, 2021 Sweet! Thought it would hold it back a lot performance wiseSent from my SM-G986U1 using Tapatalk Quote
gusto Posted June 26, 2021 Report Posted June 26, 2021 You’ll lose as much as 7-10 hp I’m guessing from the Shearers. As you mentioned, they do best with inframe drag pipes, the DMC will be awesome for trails no doubt. I pulled 87 hp with SLP amd 91 with Shearers with the exact same set up as what your about to build. My numbers are in the dyno section 1 Quote
2-stroke-addict Posted June 26, 2021 Author Report Posted June 26, 2021 You’ll lose as much as 7-10 hp I’m guessing from the Shearers. As you mentioned, they do best with inframe drag pipes, the DMC will be awesome for trails no doubt. I pulled 87 hp with SLP amd 91 with Shearers with the exact same set up as what your about to build. My numbers are in the dyno section Thank you SirWent and checked it out would be good enough for trail riding as far as I'm concerned with the 28's will probably get good fuel milage too compared to the 35's! Thanks for your info Sent from my SM-G986U1 using Tapatalk Quote
gusto Posted June 26, 2021 Report Posted June 26, 2021 When it’s built hit me up with your jetting. I’ve had issues with my 28s being super finicky between pipes. I bought some 33s I may switch over. Might just be my carbs though … 1 Quote
specialblend07 Posted June 29, 2021 Report Posted June 29, 2021 DMCs on that motor will be awesome. They're a fabulous pipe and actually have one of the better dynos for a stamped pipe. Very slept on exhaust. 1 Quote
kawa110 Posted June 29, 2021 Report Posted June 29, 2021 He said fabulous.Sent from my iPhone using Tapatalk Quote
2-stroke-addict Posted June 29, 2021 Author Report Posted June 29, 2021 He said fabulous.Sent from my iPhone using TapatalkWho's he?Sent from my SM-G986U1 using Tapatalk Quote
2-stroke-addict Posted June 29, 2021 Author Report Posted June 29, 2021 When it’s built hit me up with your jetting. I’ve had issues with my 28s being super finicky between pipes. I bought some 33s I may switch over. Might just be my carbs though …What would you say the jetting should be at?I am at just little over 6000ft.Could order the jets and get them so long will only be building it at the end of the year when I go back homeSent from my SM-G986U1 using Tapatalk Quote
SKEETER Posted June 30, 2021 Report Posted June 30, 2021 5 hours ago, kawa110 said: He said fabulous. Sent from my iPhone using Tapatalk Give em a break, he gets enough 💩 about being a fabulous coffee making secretary. Quote
gusto Posted July 5, 2021 Report Posted July 5, 2021 On 6/29/2021 at 5:02 PM, 2-stroke-addict said: What would you say the jetting should be at? I am at just little over 6000ft. Could order the jets and get them so long will only be building it at the end of the year when I go back home Sent from my SM-G986U1 using Tapatalk Sorry just seen this. I have way different pipes and jetting will be way off on mine (too big) I can look if you like, you’ll be way below my jetting with the Snipers which takes more fuel Quote
gusto Posted July 6, 2021 Report Posted July 6, 2021 I’m 148/52 at 2000 ft with Snipers. It’s jetted rich Quote
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