240+ engine kit?

SCUBA

SCUBA

New Member
Jul 23, 2010
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What is the formula to an engine with the greatest output on pump gas?

I have been looking at the Hot Rod stroker kits and the Wiesco 240 top end kits, but the more I read the more confused I am getting.

I believe that it ain't all about the cubes, and I want the boar and stroke to be as near one another as possible, but what seems to be the best combination for the Blaster motor?
 
well first off wiseco does not make a 240 kit. and any stroker crank bigger than a +3 is going to require case trenching..
 
Hi there ive just got a new piston and rings for my blaster and now its not getting full power on the band what should i do help lol
 
BLASTER2010 said:
Hi there ive just got a new piston and rings for my blaster and now its not getting full power on the band what should i do help lol
Click to expand...

well you could start by slowing the hell down and explaining it better lol. is teh piston in backwards? did you hone it bore it? you did break it in right?
 
super noober said:
well first off wiseco does not make a 240 kit. and any stroker crank bigger than a +3 is going to require case trenching..
Click to expand...

Sorry super noober, your right Wiesco makes a bottom end kit and Hot Rod makes the +4 bottom end kit. It was Vitos that sells the 240 cylinder and top end.

Is it worth the cutting on the bottom end for the +4 crank? I don,t know how long the stroke is on the +4 crank. Is it 4 more then stock, or 8 more then stock? I am thinking it doesn't change the stroke, just the height of the piston at TDC.

I saw on your signature the things you have done to your ride. It looks good naked up front like that. How big is the bore in your jug to get the 218?
 
SCUBA said:
Sorry super noober, your right Wiesco makes a bottom end kit and Hot Rod makes the +4 bottom end kit. It was Vitos that sells the 240 cylinder and top end.

Is it worth the cutting on the bottom end for the +4 crank? I don,t know how long the stroke is on the +4 crank. Is it 4 more then stock, or 8 more then stock? I am thinking it doesn't change the stroke, just the height of the piston at TDC.
Click to expand...

i would skip the +4 but it is going to give a bit more compression. and the plus 4 in 2mm up 2mm down, and a +3 is 1.5 up 1.5 down. with a .70 over piston and +3 stroker i am a true 218cc. the stroker is huge gain. but the cylinder NEEDS to be ported to match the new stroker crank or it wont make good power like it should.
 
greatest output on pump gas... what are you refering too, a big dyno number or a really good healthy rideable power spread??

The motor I am going to be building this winter will be a +4 stroke, 115 mm long rod, pro-x/la sleeve/CT cylinder and head ported for the stroke and set up to run on 110 octane. It will be a midrange motor with a lot of overrun shooting for around 50 hp with a broad torque curve. Going with the +5mm rod will give a lot of flexibility as far as porting adjustments for the stroke as porting can be optimized mathmatically and the spacer plate (for rod length) thickness can then be figured out. Money will not b an object with this motor, If I have to throw 4 grand at it, I will do so.
 
Thanx guys for all the input, I will do some more looking into it and see what I can come up with.

It looks like I want to go with a +3 crank and a sleeved cylinder.
 
the +3 or +4 is the amount that the crank adds to the stock 57mm stroke, so the +3 has a 60mm stroke, and the +4 has a 61mm stroke.

the head design and port correction are going to be where you will find the most power
 
phragle said:
There is no comparison between a sleeved 240 and the CT style cylinder.....That cylinder begins where a decent ported 240 sleeved stock leaves off.....
Click to expand...

Good lord man I went to the CT sight and for a thousand bucks it better be the top of the line ...............

I had like $600 in mind, but I'm not chassing the big dogs yet. Then again to buy the topend and bottom end I am looking at, $1000 ain't but a step away.

It would be hard to not take that step for the gain of all the matched quality it would provide.
 
don't forget to tack on porting to the 240 cylinder to match it to the stroker crank, a better clutch, and if you're making good power, i'd recommend a billet clutch basket
 
phragle said:
There is no comparison between a sleeved 240 and the CT style cylinder.....That cylinder begins where a decent ported 240 sleeved stock leaves off.....
Click to expand...

agreed 110% ... dollar for dollar the la sleeve /ct 240 kit will make the most power possible on a blaster as far as topend big bore kits go..as far as the pricing nobody ever said racing was cheap.
often it seems most people want a really fast blaster but arent necessarily willing to pay for it to do it the right way
 
FLOTEK said:
agreed 110% ... dollar for dollar the la sleeve /ct 240 kit will make the most power possible on a blaster as far as topend big bore kits go..as far as the pricing nobody ever said racing was cheap.
often it seems most people want a really fast blaster but arent necessarily willing to pay for it to do it the right way
Click to expand...

So true.The CT is my next purchase.Just need to be patient in order to get one.
 
I thought that the best thing to do was not to re-sleeve the stock 200 cylinder with a 240 cylinder. I think freek or yb200 told me that they overheat more than than the TRUE Big Bore cylinder. I would get the Vitos 240 cylinder set up with a Wiseco piston and rings. and get the Vitos +3 Stroker crankshaft. and if you get the money, get it ported. but on top of all this sh*t, you need to buy a bigger carb. I suggest a Keihin PJ 34mm carb or if you go smaller your main jet sizes will be extremely large!
 
Blaster200boy said:
I thought that the best thing to do was not to re-sleeve the stock 200 cylinder with a 240 cylinder. I think freek or yb200 told me that they overheat more than than the TRUE Big Bore cylinder. I would get the Vitos 240 cylinder set up with a Wiseco piston and rings. and get the Vitos +3 Stroker crankshaft. and if you get the money, get it ported. but on top of all this sh*t, you need to buy a bigger carb. I suggest a Keihin PJ 34mm carb or if you go smaller your main jet sizes will be extremely large!
Click to expand...

a 34pj would be a bare minimum for a ported/stroked/big bored motor. i'd probably put a PWK on it if i was spending all of that money everywhere else
 
i was under the impression the ct cylinder uses a cr style reedcage, which should give a signifigant gain in itself, a sleeved stock cylinder will not have that ????
 
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