PORTING, Does it really help or is it all BS???

[Silvermachine81]

Thanks for that, after having head work done in the past I just consider ANY 'porting' (except a basic tidy up) to be too risky considering you never know what the outcome might be......

But what about the larger valves?

[Dink]

I was not aware you were only talking about going to Suzuki's ultimate motorcycle sizes, yeah go ahead and put EFE valve sizes in.
Dink

[Silvermachine81]

I was not aware you were only talking about going to Suzuki's ultimate motorcycle sizes, yeah go ahead and put EFE valve sizes in.
Dink

1135, Best Damn motor ever made!!!!

Best powercurve ive ever seen.

Thats why I want the bigger 28/24mm valves as aftermarket ones are relatively cheap.

[Anonymous]

how do you set up your cams so that they are the best they can be? I have a 79 750 and any little tricks like this to get my baby running the best it can are helpful.

[Silvermachine81]

how do you set up your cams so that they are the best they can be? I have a 79 750 and any little tricks like this to get my baby running the best it can are helpful.

You have to learn how to do cam degreeing.

It's not that hard and it can do amazing things.

Do a search on here, buy a book or perhaps theres a video you can get.

[Anonymous]

Hi there, try this method for reference. (1) Install cams using stock timing marks. (2) Locate TDC on the degree wheel using a dial indictator or positive stop. (3) To find intake lobe center, rotate engine until you have found maximum lift using a dial indictator on the lifter. Zero indictator with cam at maximum lift. Rotate engine in reverse direction until indictator drops .040". Rotate engine in normal direction until you are at .020" below maximum lift and until you are .020" below that point. Mark or note degree wheel location. The intake lobe center is located at the point midway between these two readings. The intake lobe centerline is determined by calculating the number of degrees from your TDC reading to your lobe center reading. (4) Repeat step #3 to locate exhaust centerline. (5) You must check the following clearances: A. valve-to-piston B. valve-to-valve C. coil-to-coil D. retainer-to-guide (6) Over torqued and sloppy sprocket slotting can result in flange breakage. Porting properly will lead to huge power gains and should be the first step after carburation and exhaust modifications. Oversized valves can lead to less flow than stock if throats are not properly opened up. Flowbench and dyno testing are the key to know that modifications are improving performance. Invest in the proof and the rewards will show HP. Just my two cents worth. Dave