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hello guys I have bought this powerhead 2000cc with serial number 0D110741, who can say me the provenience and tecnical date of this engine?
rod code 636-8118 piston code 765-7441
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please help me!!!
1992 xr2 by quick search of serial #
has timing arm so turns clockwise,,,,
sst120 had locked timing and turned counter
This is an merc racing XR-2 of 1992 with 200hp on propshaft at 7000 rpm????
when arrived in my house I maked the compression test -—
1 117 psi
2 140 psi
3 140 psi
4 145 psi
5 140 psi
6 145 psi
the first piston was suspected and I put the inspection camera and I see the super breaked piston with 117 psi ��
Attachment 425164
I want chance only the piston ! Is a good idea?
wiseco 3008ss fit in this motor?
Wasn't it 200hp on the crank?
Yes they claimed in the specs 180 propshaft HPQuote:
Originally Posted by Markus
Not sure what piston type..... Might be Shhhity cast.... def not ART cause smmmoth. top.... Ring turned so for racy speeds need top pins,,,,Still looks like nice motor....Dose it have steel or nick bores?
I bought the original mercury piston STD size 3.125 ( real size 3.115 )
Attachment 426072
I measured the size of sleeve 79,375 mm (3.125 in)
Attachment 426073
Clarence of piston ring is 0,48 / 0,50
Attachment 426074
how many rpm can arrive this motor ???
8500-9000 no problem
That is an art piston... and good Head gaskets.....vicktor.....
Measure ring gap bout 1 in below deck , ring gap should b round 24 or 25?
RPMsssss depends on rod bolts.....
This is the compression test
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I don’t understand why the road bolt is very important for high rpm!
please explicate!
i have the oem 5/16 rod bolt smaller than 3/8 rod bolt of 2.5 efi offshore
with my road bolt how many rpm can arrive????
Attachment 426217this is my rod bolt!
The rod bolts keep the big end of the connecting rods inside the crankcase...Quote:
Originally Posted by Flabenk69
I don't understand when rod bolt is good for high rpm or not !
only weight difference ?
The thing that breakes most motors is..... piston stop.... IE... lean out. RPM wise the rod bolt is the next week point. Use SPS bolts if you can get them. Red Loctite em'.... after cleaning good.