ssilverado60 Posted October 1, 2007 Report Posted October 1, 2007 Hi, I currently have a 2 into 1 trinity intake with a 35mm carb and I am planning on doing some porting soon and I want to switch my FMF fattys out for a more top end pipe, like a shearer or CPI. CPI seems to be the better pipe for me but I may go with shearers for the price. So anyways, I want to go with a dune port and one of the pipes i mentioned. But I am wondering if my 2 into 1 setup will be able to handle it? I only ride sand and I now have a +4 swing arm and I run 22" 8 paddle haulers now so I want the power to back up the setup i have out back. I love the mid and low range that I have now but I am willing to give up some of it for more top end as it seems like I am always looking for more top end power than my bike can give. Any help would be appreciated. Thanks in advance also I have a trinity head with 20cc or 21cc domes (i cant remember exactly off the top of my head), VF2 reeds, and an adjustable timing plate @6* i believe. Quote
Bansh-eman Posted October 1, 2007 Report Posted October 1, 2007 I am responding without really reading your whole post so I might be off topic here... The CPI and Shearer pipes are both great pipes but do not let the differance in price sway your purchase... the two pipes are very differant from one another... as far as your 2 in 1 intake goes. I would not run in with the little bit i read. Some guys swear by them, i how ever have not seen them generate the same power as dual carbs. for a mild ported bike or a bike that your trying to build your bottom end or mid they are great. they are also very ez to tune. but if your looking for a topend bike they are not designed for that. will it run? yes will it run to its max potentail? probly not. but having all top end isnt the end all be all to a race. so there is a ton of factors to decide if it is the right setup for you. Quote
shanYE west Posted October 1, 2007 Report Posted October 1, 2007 I'd sell your 2 into 1 and buy a another 35mm carb. Quote
ssilverado60 Posted October 1, 2007 Author Report Posted October 1, 2007 if i do go with a second 35mm carb, will I be over carbed then? I know people run twin 35s but will it be too much? Quote
Bansh-eman Posted October 1, 2007 Report Posted October 1, 2007 are you going to run a 4mil crank or just dune porting? Quote
ssilverado60 Posted October 1, 2007 Author Report Posted October 1, 2007 just porting, no plans for a crank as of yet. if I ever did, it wouldnt be for a long time Quote
Bansh-eman Posted October 1, 2007 Report Posted October 1, 2007 (edited) 35s will be over doing it... but your going about this all wrong... keep in mind, a drag pipe ( Shearer or CPI ) will not run well with small carbs... your intake, porting, and exhaust all need to compliment each other... you can have the biggest baddest port job but if your carbs and pipes dont work with it your not going to get the correct power gain... you need to do some more research before you go spending your money... Edited October 1, 2007 by Bansh-eman Quote
Snopczynski Posted October 1, 2007 Report Posted October 1, 2007 You cant play ride your drag bike, so you will need to choose one or the other. We can get you more top end, but switching to a completely top end only pipe is a bit of a drastic step. There are other pipes suited for more top end than those, and will still offer some decent midrange power. Quote
ssilverado60 Posted October 1, 2007 Author Report Posted October 1, 2007 (edited) I wouldnt say im going about it wrong, I just dont want to spend more money than I have to. I am planning on going with dune porting and a top end type of pipe, which as far as I know complement fairly well. And so far its unanimous that my 2 into 1 is not gonna do the job now my focus is back on the intake side again. Twin 35s you say is over carbed which would be the cheapest option for me since i already have one 35, so what would you say, or anyone else willing to give some input, would be the ideal carb size for my proposed setup? I understand what you are saying about just getting the biggest baddest port job and things like that, that is why i dont want a drag port. I have ridden bikes with more top end oriented pipes, and I prefer the feel of them over what I currently have as it seems to fit my riding style better than how my bike currently sits. Edited October 1, 2007 by ssilverado60 Quote
ssilverado60 Posted October 1, 2007 Author Report Posted October 1, 2007 You cant play ride your drag bike, so you will need to choose one or the other. We can get you more top end, but switching to a completely top end only pipe is a bit of a drastic step. There are other pipes suited for more top end than those, and will still offer some decent midrange power. What would you recommend then? It seems like the paul turners are a good pipe as well but I have heard that they are very expensive. Quote
Bansh-eman Posted October 1, 2007 Report Posted October 1, 2007 if you want to do it right and you can afford it, spend the extra money and get a 4mil crank. by stock crank and a dune port will run better then a stock motor for sure but your not really complementing the porting and pipes with the small crank, which in turn is needing a smaller carb. your already going to spend the money to port it so all you need now is the crank and pistons and to either cut your stocker or a cool head with the correct domes for the stroker... Quote
ssilverado60 Posted October 1, 2007 Author Report Posted October 1, 2007 if you want to do it right and you can afford it, spend the extra money and get a 4mil crank. by stock crank and a dune port will run better then a stock motor for sure but your not really complementing the porting and pipes with the small crank, which in turn is needing a smaller carb. your already going to spend the money to port it so all you need now is the crank and pistons and to either cut your stocker or a cool head with the correct domes for the stroker... Ok, I see what you are saying, so from what I have read, the rule of thumb on the stroker is about a 7% power increase and Id be looking at about $500 or so. And with the 4 mil crank a set of 35mm carbs would be the right size? Also I have a trinity head so hopefully they make domes that will work with the stroker. I would assume so. Also If I did wait and do a crank as well does it just drop in or does the case need to be modified for the longer stroke? Thanks for all the info Quote
Bansh-eman Posted October 1, 2007 Report Posted October 1, 2007 Ok, I see what you are saying, so from what I have read, the rule of thumb on the stroker is about a 7% power increase and Id be looking at about $500 or so. And with the 4 mil crank a set of 35mm carbs would be the right size? Also I have a trinity head so hopefully they make domes that will work with the stroker. I would assume so. Also If I did wait and do a crank as well does it just drop in or does the case need to be modified for the longer stroke? Thanks for all the info ablosutly, thats the same motor i ran all last year. trinity i belive has their won special domes to fit their head. but i know you can buy more... if you had say a noos or prodesign cool head the domes are interchangable. the 4mil crank will drop right in. no trenching needed. just make sure you do the porting at the samt time. there is a differance in porting per the stroke. so if you did it for your stock stroke then got a crank you would have to redo it... Quote
Snopczynski Posted October 1, 2007 Report Posted October 1, 2007 Well the fact that the 2 into 1 wont work is not ruled out in my mind yet. We have a 460cc 6mm cheetah motor running pro circuits with a 2 into 1 intake and a 38mm lectron on it. It made 92 hp on the crank dyno last weekend. It had a very nice looking torque curve also. Currently I took my carb off and saw some small flaws and mismatches inside my 2 into 1 intake, and I am in the process of cleaning it up. I got out the porting tools yesterday and started match porting it to my reed cages and even took a little material off the rubber boot. The inside of the intake has some cnc cuts that can also be smoothed out to help increase the intakes capable volume and general flow characteristics. If you want to do a dune port and would like a mid-top powerband then some good pipes to look at are the T5, SST (FMF), and supposedly?????? the Paul Turner mid-tops???? Now I dont know how the PTR mid-top pipes do, but we have a set of PTR midrangess on a 4 mill and it made power to 10,500 rpm. My Banshee with a 2 into 1 pipe makes power till 9k rpm. However, on that 460cc 6mill cheetah motor the PTR mids made 5 less hp than the pro circuits. So it is going to depend on your stroke, porting, compression, and the match up of all your parts. I tell you what though, I do a lot of bottom end type power stuff for the guys we ride with. It's priceless seeing the look on someones face when they ride their bike the first time. It almost bucks them off cause the bottom end acceleration is phenomenal. Quote
sredish Posted October 1, 2007 Report Posted October 1, 2007 (edited) Your 2-1 can handle porting fine, in fact works better with porting, however make sure full drag pipes are what you want. the 2-1 is an all-around cam setup... good for a smooth powerband from bottom to top but not really a drag setup. If you want drag, then get another 35, a set of shearers and have fun. If you want more top end but still a good smooth powerband, get some Paul Turner Hi-Revs and keep the 2-1. Edited October 1, 2007 by sredish Quote
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