4mildkue Posted October 16, 2012 Report Share Posted October 16, 2012 Ive got a 4mil stock cyl and i want to put some trex cyl on there are they worth the switch or should i keep the stock cyl an info would help..motor specs 4mil stock cyl 35mm lectron on alky cut tranny drag ported Quote Link to comment Share on other sites More sharing options...
Colby Posted October 16, 2012 Report Share Posted October 16, 2012 Ive got a 4mil stock cyl and i want to put some trex cyl on there are they worth the switch or should i keep the stock cyl an info would help..motor specs 4mil stock cyl 35mm lectron on alky cut tranny drag ported spend a little more for a small block twister ! Quote Link to comment Share on other sites More sharing options...
4mildkue Posted October 16, 2012 Author Report Share Posted October 16, 2012 See my thing im trying to get 120hp out of a 4mil do you think the trex cyl can get there or the twisters Quote Link to comment Share on other sites More sharing options...
trex banshee Posted October 17, 2012 Report Share Posted October 17, 2012 trex cylinders are old school, even the stock cylinder has been around longer they just dont cut it anymore. And they are very expensive! As much as i love mine i wouldnt recommend them to someone wanting to change setup. You just never see them anymore and they require a lot of porting to really make them run, by the time all that is done you could build two cubs! lol Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted October 17, 2012 Report Share Posted October 17, 2012 About the only 4 mils that are going to get 120hp would be a 4 mil DM setup @ 540-554ccs. Thats basically a huge bore cub type cylinder. Most T-rexes are going to be in the 70s and 80s for HP. Ported by a great builder they can be just as good as a cub but you are still in the 110-115 hp range with probably a $2700 topend when you are done I am not sure how much a new t-rex runs. 120 hp is doable but probably very hard with a 421-427cc 4 mil. Just go bigger if you have to have 120hp. Quote Link to comment Share on other sites More sharing options...
4mildkue Posted October 17, 2012 Author Report Share Posted October 17, 2012 Ok so a 4mil cub can get more hp then the trex?? And how much hp could a supercub make ?? With a great builder Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted October 17, 2012 Report Share Posted October 17, 2012 Are you looking for MAX HP or Usable HP? Quote Link to comment Share on other sites More sharing options...
4mildkue Posted October 17, 2012 Author Report Share Posted October 17, 2012 Max hp Quote Link to comment Share on other sites More sharing options...
springer Posted October 17, 2012 Report Share Posted October 17, 2012 get a supercub Quote Link to comment Share on other sites More sharing options...
trex banshee Posted October 20, 2012 Report Share Posted October 20, 2012 If i could do it all over again, I would put my trex engine into a dune bike, its amazing the low end it has, especially when the powervalves were functional. Then I would have just went with a drag ported stock cylinder for my drag bike, i just never really got into the cub era. I mean they run awesome, I just like the stock cylinder look and originality. Quote Link to comment Share on other sites More sharing options...
srp Posted October 21, 2012 Report Share Posted October 21, 2012 A T-rex cylinder will run as good as any other cylinder of the same displacement when ported correctly. At the last HQ ride, Jason Kearns 535 T-rex was as fast or faster than all the bikes there around that displacement. I made a couple passes on it, and it will easily give any 10 mill (610) DM a run for its money. I was told it has already taking down one of the site sponsors 10 mill DM. Quote Link to comment Share on other sites More sharing options...
banshee332 Posted October 21, 2012 Report Share Posted October 21, 2012 A T-rex cylinder will run as good as any other cylinder of the same displacement when ported correctly. At the last HQ ride, Jason Kearns 535 T-rex was as fast or faster than all the bikes there around that displacement. I made a couple passes on it, and it will easily give any 10 mill (610) DM a run for its money. I was told it has already taking down one of the site sponsors 10 mill DM. Gary you are 100% correct about the t-rex's. Done right cc for cc they can run with just about anything. But if they are not done right they are worthless Quote Link to comment Share on other sites More sharing options...
Gotmils? Posted October 22, 2012 Report Share Posted October 22, 2012 Sorry guys I had to make another account....but who does the best port work on the Trex cylinders?? Quote Link to comment Share on other sites More sharing options...
Paulie B Posted October 22, 2012 Report Share Posted October 22, 2012 You might get that with a lil nitro but it would be a drag only tuning nightmare. Way cheaper and less of a hassle to go with a bigger motor. Quote Link to comment Share on other sites More sharing options...
srp Posted October 22, 2012 Report Share Posted October 22, 2012 Sorry guys I had to make another account....but who does the best port work on the Trex cylinders?? I have not seen anybody get anywhere close to what Passion gets out of a T-Rex. Quote Link to comment Share on other sites More sharing options...
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