exhaust port to wide
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
wiseco,pro-x vertex the big 3
[/img]
[/img]
Last edited by glen howell on July 23rd, 2010, 9:19 pm, edited 2 times in total.
gas is for washing parts, alcohol is for drinking,nitro is for racing
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
glen, the area beside the wrist pin is the trouble, i left my blackbook at the shop, but the vertex is wider at the cutout than the pro-x(which is narrower than stock!) wiseco had made a piston that was narrow, the old 554 and some early 636 versions that had fore-aft cuts, but later made the wide exhaust that almost went to the pinhole before they went full round.
The prox issue is that there is a clear window from the reed area, beside the pin, and out the corners of even a stock exhaust port, some worse than others.
The prox issue is that there is a clear window from the reed area, beside the pin, and out the corners of even a stock exhaust port, some worse than others.
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
wiesco,vertex,pro-x
[/img]
[/img]
Last edited by glen howell on July 23rd, 2010, 9:21 pm, edited 2 times in total.
gas is for washing parts, alcohol is for drinking,nitro is for racing
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
the late 554 and some 636
[/img]
[/img]
Last edited by glen howell on July 24th, 2010, 3:23 pm, edited 1 time in total.
gas is for washing parts, alcohol is for drinking,nitro is for racing
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
somebody will have returned that vertex, its not how they come factory
The wiseco pistons have changed from wiseco ALOT thru the years.
the old 554 was 371g - had large cut intake side and pin relief fore+aft
late 554 was 360g - had small cut intake side and pin relief fore+aft
early 636 was 374g - had large cut intake side and pin relief fore+aft (554 casting # on bottom)
mid 636 was 374g - had small cut intake side and pin relief towards intake
last 636 was 431g - had small cut intake side and full round
and now they have another that sounds to be like the early 636 with the large cut intake and pin relief fore+aft
I have a box full of these old wisecos, every different one i think, gotta look back at things every once in a while
The wiseco pistons have changed from wiseco ALOT thru the years.
the old 554 was 371g - had large cut intake side and pin relief fore+aft
late 554 was 360g - had small cut intake side and pin relief fore+aft
early 636 was 374g - had large cut intake side and pin relief fore+aft (554 casting # on bottom)
mid 636 was 374g - had small cut intake side and pin relief towards intake
last 636 was 431g - had small cut intake side and full round
and now they have another that sounds to be like the early 636 with the large cut intake and pin relief fore+aft
I have a box full of these old wisecos, every different one i think, gotta look back at things every once in a while
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
- glen howell
- Posts: 295
- Joined: July 23rd, 2007, 12:21 am
- Location: ca.
- Contact:
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
i dont think i have that 554 listed that you have pictured
f'n wiseco flip floppin #s and specs
f'n wiseco flip floppin #s and specs
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
-
- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
thats from a ktoom? same pin as honda? whats the pin height like in comparison?
i'm guessing you needed the spacer on the deck because you used a long cr rod in it, why not a short cr rod?
i'm guessing you needed the spacer on the deck because you used a long cr rod in it, why not a short cr rod?
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
-
- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
why the heck arent we using that piston?
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
-
- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm