Powerplant: Tuning Carburetor, Exhaust, compression, engine setups, etc.

[michael950]

Calculating Displacement:

1. Yamaha 62T/61X Displacement vs. Bore/Stroke Combinations
2. cant rember the formula to work cc size

Compression Test:
How to check compression - Procedure
Compression Question - Numbers and subsequent actions

Resleeving
http://www.x-h2o.com/threads/36188


List of Engine Builders:
Complete List of Engine Builders Specializing in performance SJ motors

 

[michael950]

Engine Information- Configuration Setups incl. pistons 62t vs 61x lamey big bore

Engine Types:
The Great 61X/62T Debate, Philosiphized....
The usual suspects beating the dead horse. okey: I know this will be a good read, and probably confuse you to the point you don't know what to do.

PWCT: 62t to 61x whats the difference

lamey vs. 701 super-bore
Good advice on spending the cash before you have the skill. Consensus is, start with what you have, build as you go. As your skill gets better and you need the power to move on, then spend the big bucks (unless you get a sponsor).


Pistons:
ceramic coating pistons

Pro X / Wiseco Pistons

Buy Wiseco pistons individually or as "matched" pairs?


Misc
best motor mount for sj?
Member preferences for motor mounts

Using Devcon putty to fill 62t cases

 

[michael950]

Carburetion - Single dual carbs AND Intake - reeds reed spacers Popoff Pop Off Chart

Single Or Dual Carbs

Single 44mm into Duals?

Surf use - OEM38s Vs. OEM 44s

What kind of paint to paint carbs?


? on adjusting my carbs - One of the many posts on B-pipe jetting


reed spacer or stuffer? - Comparisons and functions of each.


Mikuni Spring Color & Popoff Pop Off Chart - PHOTO Included!!


My notes from a Mikuni seminar by Herb Kane - Includes stock flow rates


MANDATORY READING: Mikuni Watercraft Carburetor Owner's Manual
Despite the page count, it is an easy and somewhat quick read.

FYI: I scanned a pamphlet about tuning your ski I received with a manifold I bought. Hope it helps.

 

[michael950]

Exhaust - Factory pipe, cooling, etc.

Factory Pipe: ltd vs mod - This thread, though about the differences between Factory Performance exhaust pipes for the SuperJet, diverges into discussion about timing advances.

B-pipe cooling, routing water lines

Jetworks fc valve worth it with SINGLE cooling?? - members positive experiences with the Flow control valve


B pipe manifold diameter
For those who own older B-pipes, be sure to check this thread.


PWCT: Installing factory mod pipe in stock sj

 

[michael950]

Pump Modifications and Trim Systems

C.A.T.S. - Cheap Arse Trim System - post your's!

 

[michael950]

Flywheel - lightening lighten lightened aftermarket and weights weight of flywheel

OEM lightened flywheel review

Lightening My Stock Flywheel - Tips

Lightened (or not) 62t flywheel - also includes comparisons with photos of the differences.

 

[michael950]

Carburetion - adjustment jetting pistonwash reading sparkplugs

pistonwash and sparkplug reading

 

[michael950]

Intake manifolds and Reeds

Filling Crossover - Discusses process and potential gains in filling OEM intake manifold.

Best twin carbs and manifold ? ? - Great info on intake manifold design.


rad valve versus v-force

What Reed valves do you run?

R&D M-16/Dominator setup for 62t - WTB ad (Pro-R&D)

 

[michael950]

Engine coupler alignment

Coupler Alignment

 

[michael950]

Torque Specs

Yamaha torque specifications (provided by douglee25)

 

[michael950]

RAD Flywheel Instructions

Rad flywheel stuff...