Freestyle Ported cylinders for sale you say??

NVJAY775

NVJAY775

My home away from home.
Location
Gardnerville, Nevada, United States
From personal experience over the last couple years of milking some of the above mentioned cyl's.

This is just my personal opinion, but...

If you are looking at buying some ported cyl's. And they are not from a known builder with known quality porting. You are possibly buying a product that is more than likely destined to fail. Severity of failure will vary. And cost you more than it would have, to just buy from a known and reputable builder / porting guru, with years of experience of purveying braptastic experiences in freestyle.

Mine came in a ski I picked up a few years ago and the builder was unknown. Great hit, but below average compression for a ported cyl compared to others from reputable builders.

Lesson learned for me. Just trying to help others not go down the same spendy and irritating road.
 
kevbo

kevbo

Location
dfw
Polish jet pilot said:
wouldn't less compression equal longer life of the motor??
Click to expand...

Porting generally comes in two flavors, race and freestyle. There are plenty of old race cylinders and botched port jobs around to sell new guys that dont know the difference. Higher exhaust ports will make lower than "expected" compression and need custom pump work to get half decent response. Even then it may be unsaveable.
 
OCD Solutions

OCD Solutions

Original, Clean and Dependable Solutions
Location
Rentz, GA
I keep paper tracings of all my cylinders for reference. Never really taken the time to map out port timing in degrees but I'm sure it would be a good exercise as well.

Porting of the intake and cases is alot harder to measure though so even though you may have ideal port timing, you may not have the intake and exhaust porting able to flow enough volume to benefit fully.

I firmly believe in doing things myself but I admittedly do not have the time or resources to even begin to think about learning about porting so I will continue to leave it to the experts.
 
Last edited:
JetManiac

JetManiac

Stoked
Site Supporter
Vendor Account
Location
orlando
We have seen lots of 'porting' in customers motors sent to us for upgrade/redo. It is almost always ported in the wrong places and the wrong amount for freestyle. We can almost never use these parts and customer must buy nonported parts to start over.

just start with nonported oem parts and then have a quality builder port your motor, there are many to choose from.

As Kevbo said, many of the 'ported' motors floating around used are race or amateur ported and often have less low end power than stock.
 
jd91t

jd91t

Location
Kansas City
Ruh Roh
I just ported my own 61x cyl using Race logic super stock template and the sleeve openings as a map..
Ported my 61x cases too, after staring at countless ported 62t case pics on the web..
Getting and 83mm bore 2day..
Assembly this weekend.
Fingers x'd it'll have ZOOT :)
 
jd91t

jd91t

Location
Kansas City
On the original note of buying used ported cyls..
I had initially planned on using a Beautifully ported 61x cyl I bought from a friend because 61x port timing is were its at for trick boats.
Only to find that they obviously came from a "race" boat because the exh port height had been raised 2mm to 62t specs :(
 
kevbo

kevbo

Location
dfw
jd91t said:
On the original note of buying used ported cyls..
I had initially planned on using a Beautifully ported 61x cyl I bought from a friend because 61x port timing is were its at for trick boats.
Only to find that they obviously came from a "race" boat because the exh port height had been raised 2mm to 62t specs :(
Click to expand...

That should still be useable with a bored nozzle and pitched down impeller. You trade a little response for more thrust.
 
catpower

catpower

Location
iowa
jetmaniac said:
We have seen lots of 'porting' in customers motors sent to us for upgrade/redo. It is almost always ported in the wrong places and the wrong amount for freestyle. We can almost never use these parts and customer must buy nonported parts to start over.

just start with nonported oem parts and then have a quality builder port your motor, there are many to choose from.

As Kevbo said, many of the 'ported' motors floating around used are race or amateur ported and often have less low end power than stock.
Click to expand...

You say we, then you say have a quality builder port your motor. If you don't port can you give some good builder names? I think I'm in that camp of wrong port job for motor responce I want.
 
motobehrens

motobehrens

X
Location
Gilbert, AZ
The first cylinder I had worked on cost me $250 for a "port clean up". It ran great at first, probably a testament to the stock mismatched ports responding to some decent matching. Then the thing wouldn't hold a tune. sometimes it would run good, sometimes not. After a set of pistons and months of troubleshooting, I found a crack in my transfer port. I couldn't see it with the naked eye, and had to fill my cooling passages with oil based UV dye mixed with vegetable oil and pressurize to find it. A gentle push with a screwdriver was all it took to push through to the cooling passages. The same with a second area that I was able to gently push through the aluminum. The rest of the cylinder work was very asymetrical. i.e very different between cylinders. I used to joke around that the front was ported for top end and the rear was ported for bottom end..

I've had two other ported cylinders since. One is unknown and looked good. The other is a groupK 84mm 62T which looked great(very symmetrical) and ran great.

Moral of the story is to pick someone who knows what they are doing, and has experience grinding on the cylinder you will be running.


2012-09-01_09-38-05_721.jpg2012-09-01_09-18-59_703.jpg2012-09-01_09-21-07_181.jpg2012-09-01_09-21-52_994.jpg
 
#ZERO

#ZERO

Beach Bum
Location
Florida - U.S.A.
Never seen a two angle port job where the transfer and boost contour is way higher on the second stage. :biggrin:

You should have paid an extra fifty bucks or so and have a professional do the job because you just wasted $250 and the price of a 61X cylinder.
 
jkemp

jkemp

Location
PARMA, OHIO
Just ran across this thread and i am currently freshening up my 62t/61x 701 my cylinders are ported nicley and seemed to be mild and it hit HARD. TLR is engraved in the cylinder on the outside so i'm assuming that's who did the work. anyone know anything about them? just curious
 
D-Roc

D-Roc

I forgot!
Location
Dirty River Rider
I used the freestyle sport port on 61x cylinders. It works great right up to 84 mm bore. Lots of my buddy's have used it. I got a TLR dasa and although mild, it is quite powerful for what it is.
 
Sospikey

Sospikey

Trying to get upside down
Location
Sweden
OCD Solutions said:
TLR is Todd Lachance Racing. I have one of his 760 cylinders and bring up how hard it hits everytime a 760 thread comes up. If ported correctly, the 62T is very strong.
Click to expand...

I stand corrected, Sir! DBP is Protec, nothing else!
 
You must log in or register to reply here.
Top Bottom