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post #1 of 20 (permalink) Old 08-03-2006, 02:24 PM Thread Starter
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Spun crank bearing?

How hard is it to rebuild an engine (92 GSXR 600) that has a spn crank bearing if the engine is out and disassembled? I'm very mechanically inclined, but don't have much motorcycle experience. I was just wondering if it was a simple replace and rebuild or if it required machine work and total engine rebuild.
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post #2 of 20 (permalink) Old 08-03-2006, 02:44 PM
 
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Quote:
Originally Posted by sdog30
How hard is it to rebuild an engine (92 GSXR 600) that has a spn crank bearing if the engine is out and disassembled? I'm very mechanically inclined, but don't have much motorcycle experience. I was just wondering if it was a simple replace and rebuild or if it required machine work and total engine rebuild.
Good chance you will have to replace the crank...I have never had a good experience rebuilding that repair without replacing the crank...and if you are gonna do that...
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post #3 of 20 (permalink) Old 08-03-2006, 02:46 PM
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Quote:
Originally Posted by bumblebee
Good chance you will have to replace the crank...I have never had a good experience rebuilding that repair without replacing the crank...and if you are gonna do that...
and its a tuff job putting somebody else's junk back together. Might be better off finding a used motor instead of rebuilding.

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post #4 of 20 (permalink) Old 08-03-2006, 03:40 PM Thread Starter
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Originally Posted by jeeps84
and its a tuff job putting somebody else's junk back together. Might be better off finding a used motor instead of rebuilding.
You happen to know the range of years of engine will match up with everything else on the bike? Expected price for used if I stay with a 600cc? If the bike has been in storage disasembled for 7 years are there any other parts that might have to be replaced as well?
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post #5 of 20 (permalink) Old 08-03-2006, 03:49 PM
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Basically any 600cc Zuk motor from that body should fit up to 94 or 95. I wouldn't pay more than a few hundred.

All the fluids would need to be changed gas, brake fluids etc and the tank my need to be gelled. All the fuel lines would need to be replaced and possibly the brake lines. Carbs would need to be cleaned and balanced. Most likely would need a new chain too.

Basically it would be a money pit. Unless its free. I would just find another bike.

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post #6 of 20 (permalink) Old 08-03-2006, 04:04 PM Thread Starter
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Originally Posted by jeeps84

Basically it would be a money pit. Unless its free. I would just find another bike.
Close to free, the guys asking $800 with extra tank/plastic/parts. Would a 2001 fit. I found a stock GSXR engine with 0 miles for $200.
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post #7 of 20 (permalink) Old 08-03-2006, 04:51 PM
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I don't think it would and that price sounds to good to be true anyway.

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post #8 of 20 (permalink) Old 08-03-2006, 05:52 PM
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hmmm, i had the same thing happen on my 03 CBR 600RR, it did the same thing, the mechanic told me we would have to replace the crank shaft and all the gaskets and seals, etc...THEN he said they would have to tear it all down and basically rebuild it from scratch in case there were metal shavings in the engine...blah blah, in the end it was cheaper and a lot better piece of mind to buy a brand new engine set up to just drop in!! check out some motorcycle salvage yards, i got a newer and better engine (05) ready to go, and had it shipped (got it within 2 days) for just under $1600. I would think for a bike that old you should be able to find it much cheaper, but i know the salvage yards could tell you for certain!! they were super helpful to me, my new engine had only 27 miles on it, in perfect condition, but the bike around it had been totaled...and i ride with alot more peace of mind!!!
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post #9 of 20 (permalink) Old 08-03-2006, 06:06 PM
 
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This is the part where you praise God for sending squids amongst us!

There should be any number of second hand motors for a Gixxer 6 around just sitting in bent frames! Good Luck! Do your maths though, find out what it would costs for a crank repair/replace, and compare. Remember any second hand motor will be an unknown quantity (how many Miles on it?, how was it maintained?, etc), so unless the cost difference is substantial, it might be worth going the rebuild!

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post #10 of 20 (permalink) Old 08-03-2006, 10:09 PM
 
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First off, only someone who likes pain, spending money, and saying lots of cuss words would buy an engine in pieces.

Secondly, I happen to have in front of me the July, 1993 issue of Motorcyclist where they tested the 600's (the 93 Gixxer was same as 92). Here's how Art Friedman summed up the GSX-R: "I see no reason to buy the GSXR. It's heavy, expensive, slow, awkward to ride in the real world and horrifically uncomfortable. I'd rather have a Katana."

Thirdly, there were some good bikes from the 90's (ZX-11, CBR1000, FJ1200, etc.) that only need modern tires, suspension, and brakes to make them into great do-anything bikes. Look for something else.
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post #11 of 20 (permalink) Old 08-04-2006, 01:32 AM
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post #12 of 20 (permalink) Old 08-04-2006, 10:17 AM
 
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The crank is the most crucial part of any engine...the rest of the motor is built around it...Unless you just enjoy wrenching and have the patience to split the cases and rebuild the engine literally from the crank up...you should pass...

I am going to bring the 750A back to Tally from the farm in Sept. when I am up there...and it is going to be a complete disassembly and rebuild...I figure it will take about 4 months...longer if birdman and opiate help me...
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post #13 of 20 (permalink) Old 08-04-2006, 10:32 AM Thread Starter
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Quote:
Originally Posted by No Worries
Secondly, I happen to have in front of me the July, 1993 issue of Motorcyclist where they tested the 600's (the 93 Gixxer was same as 92). Here's how Art Friedman summed up the GSX-R: "I see no reason to buy the GSXR. It's heavy, expensive, slow, awkward to ride in the real world and horrifically uncomfortable. I'd rather have a Katana."

Thirdly, there were some good bikes from the 90's (ZX-11, CBR1000, FJ1200, etc.) that only need modern tires, suspension, and brakes to make them into great do-anything bikes. Look for something else.
First bike, so I've been trying to keep it 600cc and around a couple grand. Any suggestions as to what whould be a better bike? I've been riding my friends 95 YZF and pretty much like that set-up. It doesn't feel like too much of a bike (6'1" 215lbs) and I like that it has some get-up-and-go but it's not a total monster and it's pretty comfortable to ride on.
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post #14 of 20 (permalink) Old 08-04-2006, 10:47 AM
 
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You'll end up spending more money in gaskets, seals, bearings, etc than you would in a whole new (used) engine.
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post #15 of 20 (permalink) Old 08-04-2006, 01:36 PM
 
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Originally Posted by sdog30
...It doesn't feel like too much of a bike (6'1" 215lbs) and I like that it has some get-up-and-go but it's not a total monster and it's pretty comfortable to ride on.
The Honda CBR600, from 1987 to 1998, fits your criteria. Quick, fast, comfortable, and easy to work on. The older ones are cheaper, but the newer ones are better.
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post #16 of 20 (permalink) Old 08-04-2006, 02:13 PM
 
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Originally Posted by No Worries
The Honda CBR600, from 1987 to 1998, fits your criteria. Quick, fast, comfortable, and easy to work on. The older ones are cheaper, but the newer ones are better.
Best beginner bike in the 600cc class. Honda CBRs are bulletproof machines. I know that for a fact, had an 87 Hurricane 600, those things are just built like tanks. it had been dropped, laid down, and just beat on so much, but still ran and rode just fine. needed new plastics, but it rode fine. those are your absolute BEST bet for a good first bike.
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post #17 of 20 (permalink) Old 08-04-2006, 04:54 PM Thread Starter
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Hey, thanks for the advice. I like CBRs, seemed like an older GSXR was cheaper from looking around a little. I have use of my friends bike for the rest of the summer, so I might just wait a month or two until the leaves start falling and so do the prices.
I'm frickin' addicted to the smiley faces, they're so funny.
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post #18 of 20 (permalink) Old 08-04-2006, 10:02 PM
 
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yeah, I've started shopping other forums and just down loading the smilies. I store 'em on photobucket and use them when I feel like it.

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post #19 of 20 (permalink) Old 08-04-2006, 10:12 PM
 
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If you really wanted to fix your gixxer, I think I saw a member here has a full motor that probably runs fine for sale. just check the for sale forum.
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post #20 of 20 (permalink) Old 08-06-2006, 01:12 AM Thread Starter
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Quote:
Originally Posted by King Bob
If you really wanted to fix your gixxer, I think I saw a member here has a full motor that probably runs fine for sale. just check the for sale forum.
Yeah, I saw that. A '93. I emailed him. I actually don't own a GSXR, but saw one for sale for $800. Only problem was a spun crank seal (hence the title) and it had been sitting in storage for 7 years. I was just trying to figure out if it would make sense to buy it or not, but I'm worried I'll have to replace everything else on the bike from it sitting along with the engine. Might be worth it just to wait the two months. I don't mind swapping out the engine, but I don't want a complete project.
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