flatbedin Posted January 17, 2010 Report Share Posted January 17, 2010 I'm looking for suggestions on improving the low end power of my current setup. The current mods are recent top end, Mull Engineering head, 2 stage reeds, +4 timing, trinity stage IV exhaust, K&N with proflow, 300 mains, middle clip, 27.5 pilots, 2 turns out on air screws. I'm also running 22" mudlights with 13/44 gearing. The 4 wheeler runs good and I feel like it is jetted pretty close. We do a lot of riding at Durhamtown Plantation in Ga., which is a mix of wooded open and tight trials, mx tracks, drag strip, flat track, etc. With my current setup it seems like I am always waiting on the powerband to come in, especially on the tracks. Once on the powerband it pulls good, but a lot of times it seems like I am between gears. I'm either revving the crap out of it or I'm waiting for it to get on the pipe. I've read a lot of recommendations on here for pro circuit exhaust for decent low end. I understand this machine is a 2 stroke and it's gonna be high strung, but will the pro circuits make a noticeable difference? The trinity pipes were on the 4 wheeler when I bought it and it seems like they are more of a top end pipe. I'm looking for opinions/experience before I buy a new exhaust system. Thanks. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 18, 2010 Report Share Posted January 18, 2010 yes, the pro-circuits are an awesome low-mid pipe that will give you much longer gears, and come on sooner. first, what domes do you have in the head? is there porting done? what fuel are you running? for 93 octane, and stock porting, i would run 20cc domes and +5, or +5.5, as ong as you keep it jetted right, and not run old fuel. ti makess awesome useable power in your type of ridding. Quote Link to comment Share on other sites More sharing options...
Building my First Posted January 18, 2010 Report Share Posted January 18, 2010 What AK said. Quote Link to comment Share on other sites More sharing options...
alf44 Posted January 18, 2010 Report Share Posted January 18, 2010 Wouldnt my fmf golds have some low end powere Heath. Proly cheaper to. Geez I need to sell them. Quote Link to comment Share on other sites More sharing options...
flatbedin Posted January 18, 2010 Author Report Share Posted January 18, 2010 yes, the pro-circuits are an awesome low-mid pipe that will give you much longer gears, and come on sooner. first, what domes do you have in the head? is there porting done? what fuel are you running? for 93 octane, and stock porting, i would run 20cc domes and +5, or +5.5, as ong as you keep it jetted right, and not run old fuel. ti makess awesome useable power in your type of ridding. The head is a modified stock head that is sold my Mull Engineering. I think it is equivalent to 20cc domes. No porting. 93 octane 32:1 927 oil. Where is the best place to purchase the pro circuits? Quote Link to comment Share on other sites More sharing options...
baker Posted January 18, 2010 Report Share Posted January 18, 2010 i'd ditch them 22" tires and run the stock size not only do the big tires look stupid they ruin the low end power imo Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 18, 2010 Report Share Posted January 18, 2010 no, don't ditch the 22's. those are just fine, and almost big enough for the ridding. besides, you are geared for them anyways. even stock gearing, i have more than enough lowend in the tight shit running 22/12/9's and not as much ground clearance as i would like. i used to runn 25's on the blaster, and that thing trailed really nice. there are a few people on here sellin pro-circuits, or you can go online. if you don't have to go new. that head will work about perfectly. alf, pm me some different profile pics of those fmf's again. i wanna see something Quote Link to comment Share on other sites More sharing options...
alf44 Posted January 18, 2010 Report Share Posted January 18, 2010 Will do Heath. I'm not on my pc anymore. Shoot me a pm would ya or ill forget. What are you looking at. There the golds signature series. They don't come with the signature anymore. From what I understand there more rare and proly worth more. I just need too finish my motor so I need them gone. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted January 18, 2010 Report Share Posted January 18, 2010 A 4 mill stroker crank makes for a much stronger midrange if you got the cash. Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted January 18, 2010 Report Share Posted January 18, 2010 The gold series pipes are like T5's, not really a low-mid pipe. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 18, 2010 Report Share Posted January 18, 2010 actually, i took a closer look at the different profile of them in the f/s thread. they are the "torque" or "woods" out of the 2. Quote Link to comment Share on other sites More sharing options...
flatbedin Posted January 18, 2010 Author Report Share Posted January 18, 2010 Does FMF make a pipe that is comparable to the pro circuits? Also, what about having my cylinders ported and keeping the trinity pipes? Can the cylinders be ported to improve low end with my current setup? I'm having trouble deciding between pipes or porting. I can't afford to do both at the same time. Thanks for the replies. Quote Link to comment Share on other sites More sharing options...
AKheathen Posted January 18, 2010 Report Share Posted January 18, 2010 well, nothing really compares to the pc. you can get the woods port to match pc's and buy the pipes later, and it will still work, or you can switch the pipes if you are still on a relatively fresh bore.... Quote Link to comment Share on other sites More sharing options...
BSHEE400 Posted January 18, 2010 Report Share Posted January 18, 2010 i'd consider the fmf gnarlys also, they are a decent low end pipe and i'm sure you pick up a set real cheap Quote Link to comment Share on other sites More sharing options...
Snopczynski Posted January 18, 2010 Report Share Posted January 18, 2010 The Gnarley is fmf's current low-mid pipe. Their old low-mid pipe had the same lower header design as the Fatty's. The gold series pipe had a gradual curve with no squared off or angled turns in the headpipe curve. The gold series was a mid-top pipe with power characteristics similar to the T5's. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.