Performance Parts?

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87srvsnow

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As for the short exhaust pipe, dont get it get any short than say a foot if its just a straight pipe. If its too short, the rush of cold air when the engine is shut off can make the exhaust valve(s) brittle.

oh ok, thank you. is there anything i could do with the intake manifold?
like could i make one out of piping? would it help at all? just curious
 

mike75925

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the further the carb is away from the intake the more torque you develop. a down-draft intake would aid in faster delivery. but that would most likely require a fuel pump. removing a bend or two would help. hmmm, (5 mins later) are you running the stock muffler? preheated fuel is good for economy, but cool fuel is for power. if you do succeed in re-plumbing the carb away from the exhaust, you may need to adjust your mix to leaner if possible. i am unaware of any bolt-on performance enhancers, from what i see though, bigger engines usually benefit from smaller engines parts, ford, chevy, dodge, honda etc.. if you know your specs and find a rod or piston with a bit longer reach you will increase compression, same as decking a head. though decking will keep stock revs, stroking will take longer (to rev) and add torque. may require larger jets and or carb for stroking. longer pushrods, the list goes on.
 

87srvsnow

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this stuff takes time to get though my head. haha. also no i am not running a stock muffler, it is straight piped. would it work to mount the gas tank higher so i wouldn't need a fuel pump to get gas to the carb so i could make a down shaft intake.
 

mike75925

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it could, make sure the new mounts are strong enough, and vibro-dampened. age if you don't mind? i'm 28.
 

87srvsnow

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im 15. and are you talking about the new mounts for the gas tank? what is vibro dampened, im guessing it is to lessen vibration?
 

squat251

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another decent update to an engine, and easy to acquire is shorter plugs, if it takes a medium use a small, just NEVER EVER go longer, you could ruin your piston, and valves that way.
 

mike75925

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that would lower the compression though right? how does it gain other than maybe help shape the resulting combustion?
 

squat251

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the shape of the compression can make a big difference, my uncle and I used to (before his death) work on his drag cars and he would go into extreme rants about how shape of the combustion could make or break you. plus the compression loss is minimal, you wont notice that.
 

mike75925

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yeah i swapped for a 160 head, i can't tell anything. hemi is argueably the best, but i haven't seen any domed pistons for honda's or heads for that matter. duh spark plug upgrades! platinum, multi electrode, ignighter plugs.
 

squat251

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ya know, the only plug that had any difference in performance for me was platinum, the multi electrode didn't do much, and if you think about it, it shouldn't its only going to spark to one at a time anyways.
 

mike75925

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once yes, but four at once, if it does right. the old split fires supposedly would melt your piston if you did not retard your timing. what about these thirty dollar iridiums? they run em in the moto-cross bikes with 12 and higher to one ratios.
 

squat251

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i dont really see that it makes that much of an increase in...anything though, even if all four did spark, even though they really shouldn't the fastest way to ground cannot possibly be all four, a spark should be a spark, as long as it will ignite the fuel, it should run fine, that is assuming that your getting the good blue spark.
 

mike75925

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the idea behind multi's was that the extra spark would ignite the rest of the fuel, for a thorough burn
 

squat251

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yeah, give it a try, should improve your go go. and if all the fuel isn't lighting off, than its a spark problem in the first place. if you got a camera in the jug to see the spark on one of those i can guarantee that only one is sparking at a time.
 

87srvsnow

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is it possible to go to short of a plug? i know plugs don't cost much but when i only make $8 and hour shoveling horse crap every dollar counts.
 

87srvsnow

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i bought a shorter plug. it has only like 5 threads on it. i couldn't find a plug with the same numbers on the side, but it is the same brand. it looks exactly the same just a smaller version, is that ok?
 

squat251

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yeah should work fine as long as it will fit in the hole xP jk. your not going to be able to find one with the same numbers, its a different size, different numbers. you can't go too short as there are only 3 different sizes. just make sure you NEVER go longer than the first plug
 

87srvsnow

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yeah should work fine as long as it will fit in the hole xP jk. your not going to be able to find one with the same numbers, its a different size, different numbers. you can't go too short as there are only 3 different sizes. just make sure you NEVER go longer than the first plug


ok thanks man.
 
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