what hapened to that superjet motor thread?

[onesojourner]

some one started a really good thread about the differences of the 6m6, 61x and 62t but I forgot the subscribe now I can't find the sucker. :sneaky::sneaky::sneaky::sneaky::sneaky::sneaky::sneaky::sneaky::sneaky::sneaky:

:sneaky:



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:sneaky:

 

[onesojourner]

bump ^^^

 

[Shonuff]

From Group K

The Different Super Jet Models - The Yamaha Super Jet has been a popular competition platform since it’s introduction in 1990. While many parts of the machine has remained, there have been a number of technical updates that would be important to owners considering competition level modifications. The following is a brief overview of those updates.

'90/'92 633 - Single 44mm carb, 77mm (633cc) 6M6 cylinder, smaller 6M6 reeds, 6500 rpm limiter.

'93 633 - Siphon type bilge that sacrifices less thrush, slightly larger diameter pump exit nozzle for
better thrust.

'94/'95 701 Single carb - 61X cases with larger reeds, 81mm 61X cylinder, narrow wrist pin bearings
with thrust washers, 7100 rpm rev limiter, changed impeller housing mounting.

‘96/’99 701 Twin Carb - 62T "raider" cases with larger reeds, beefier "62T" cylinder head casting, dual 38mm carbs, "sharp nose" hull design change in ‘97.

To help parts managers to differentiate parts, Yamaha uses a particular part number "prefix" to identify parts that are exclusive to a particular model. In many cases this prefix is cast on (cases, cylinders, and heads) or printed on the part itself (like cdi boxes). The following are the common prefixes and the
machines they relate to. These prefixes will be referred to later in this document as they are often important with respect to IJSBA rules.

6M6 ’90 - ’93 633cc models

61X ’94 - ’99 701cc models

62T ’96 - ’99 701cc models

64X ‘97 - ’99 753cc models (non-stand-up)

 

[Shonuff]

is this it?

 

[h2odesperado]

whats a sharp nose hull?

 

[cookerq62]

http://www.x-h20.com/showthread.php?t=1665

 

[onesojourner]

http://www.x-h20.com/showthread.php?t=1665

thats the one. thanks.