head gasket??

W

wydopen

Guest
hi i just noticed some exhaust coming out of my pissers when running my ski out of the water and im assuming that my head gasket is starting to fail...

my question is what gasket to use?...

i have a 701 top end out of a raider..stock head not milled i believe( i guess ill find out when i pull the head)..
its bored to 730 so do i need to get a gasket that matches the bore or will a stock one work ok???

thanks
 
WAB

WAB

salty nuts
Location
coastal GA
wydopen said:
hi i just noticed some exhaust coming out of my pissers when running my ski out of the water and im assuming that my head gasket is starting to fail...

my question is what gasket to use?...

i have a 701 top end out of a raider..stock head not milled i believe( i guess ill find out when i pull the head)..
its bored to 730 so do i need to get a gasket that matches the bore or will a stock one work ok???

thanks
Click to expand...

Drill & tap another hole hole for a second pisser on the front of the head, letting it squirt overboard. That will help with your cooling flow. I had the same problem.....
 
W

wydopen

Guest
WAB said:
Drill & tap another hole hole for a second pisser on the front of the head, letting it squirt overboard. That will help with your cooling flow. I had the same problem.....
Click to expand...

so you are saying thats why the head gasket is failing or thats why the exhaust is coming outof the pissers??...i have two btw i guess a compression test wold tell me without taking the head off right??
 
W

wydopen

Guest
yea i alreay have another hole taped for the second pisser...i ordered a stock gasket but im worried it wont be big enough for the bore(730cc) any suggestions/reccomendations??
 
WAB

WAB

salty nuts
Location
coastal GA
wydopen said:
so you are saying thats why the head gasket is failing or thats why the exhaust is coming outof the pissers??...i have two btw i guess a compression test wold tell me without taking the head off right??
Click to expand...

Both, I think. :biggrin:
It was strange, I still got even compression even though the head gasket was burned through and the metal ring around it was cracked. It was blowing smoke/steam out of the pisser also. I hooked up the second line coming off the front of the head for the water to come out of, replaced the burned head gasket, and it never happened again.
Just pull the head and check it out. I would also lap (sand it with emory cloth a on glass or marble surface) the gasket surface of the head before putting it back on also to make sure it is flat & smooth. I also rub some grease or oil on the gaskets so they don't stick & come off easy the next time you take it apart.
 
Mark44

Mark44

Katie's Boss
Location
100% one place
wydopen said:
hi i just noticed some exhaust coming out of my pissers when running my ski out of the water and im assuming that my head gasket is starting to fail...

my question is what gasket to use?...

i have a 701 top end out of a raider..stock head not milled i believe( i guess ill find out when i pull the head)..
its bored to 730 so do i need to get a gasket that matches the bore or will a stock one work ok???

thanks
Click to expand...

Do you have a pipe on the ski? If so you will get exhaust out the pisser from the water injection holes in the head pipe while running the ski out of the water.

Mark44
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
Eh....I got exhaust coming out my pissers all the time. Not sure if a stock pipe would do it.
 
W

wydopen

Guest
Mark44 said:
Do you have a pipe on the ski? If so you will get exhaust out the pisser from the water injection holes in the head pipe while running the ski out of the water.

Mark44
Click to expand...

yea i got a bpipe

my concerns are more if the oem head gasket will fit my bore...how much room does the oem gasket leave for bores??.thats why im hesitant to remove the head i dont want to destroy the gasket if thats not the problem and an oem one wont work...some of you bigboreguys have to know
 
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Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I believe the OEM gaskets come in different overbore sizes. The head itself is good for overbores (up to 83mm, not entirely sure), but the gasket may need to be sized appropriately.
Hopefully a pro will chime in.
 
W

wydopen

Guest
Matt_E said:
I believe the OEM gaskets come in different overbore sizes. The head itself is good for overbores (up to 83mm, not entirely sure), but the gasket may need to be sized appropriately.
Hopefully a pro will chime in.
Click to expand...

yea the guy at the dealer said they didnt have different sizes for overbores so i dont know...im assuming it will fit but i want to make sure..
 
tor*p*do

tor*p*do

Squarenose FTW
Site Supporter
Location
NW NC
my 750sx blows exhaust out the stock pisser with a stock exhaust while running out of water. in the water, it blow a little exhaust until the pipe fills with water and then only blows water. after you cut it off after riding, it will blow steam as water in the pipe boils off.

I thought this was normal. Am I wrong???
 
hangtime

hangtime

Speak up ,don't kiss azz
Location
WORCESTER,MASS- HAMPTON N.H.
tor*p*do said:
my 750sx blows exhaust out the stock pisser with a stock exhaust while running out of water. in the water, it blow a little exhaust until the pipe fills with water and then only blows water. after you cut it off after riding, it will blow steam as water in the pipe boils off.

I thought this was normal. Am I wrong???
Click to expand...


it's normal :biggthumpup:
 
tor*p*do

tor*p*do

Squarenose FTW
Site Supporter
Location
NW NC
whew, thanks hangtime!
how is Mass these days.
I fled in 1990 to south of the mason dixon and havenet looked back
I have family there and visit regularly though
thanks for the info!!!:arms:
 
hangtime

hangtime

Speak up ,don't kiss azz
Location
WORCESTER,MASS- HAMPTON N.H.
tor*p*do said:
whew, thanks hangtime!
how is Mass these days.
I fled in 1990 to south of the mason dixon and havenet looked back
I have family there and visit regularly though
thanks for the info!!!:arms:
Click to expand...


I'm thinking about leaving too I fugging hate it here .How far from the ocean are you and can you get decent place within an hour of the ocean.
 
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