rebuild kit

drewkuch · Post by **drewkuch** » Sun Feb 22, 2009 11:22 pm

where can i buy a complete engine rebuild kit for a 1985 honda spree nq50?

ps...at a decent price

Kenny_McCormic · Post by **Kenny_McCormic** » Mon Feb 23, 2009 8:56 pm

You only buy what parts you need, the only kit you can get is all the gaskets.

drewkuch · Post by **drewkuch** » Tue Feb 24, 2009 10:44 pm

True, ok.

Um, well what do i do next? i'm still at 30 psi compression. Spark and fuel ok. What to start with helping my compression or eliminating parts.

Rings i dont feel would make a dramatic change, but would help.
I think my reeds are ok.
What about crank seals?

Kenny_McCormic · Post by **Kenny_McCormic** » Wed Feb 25, 2009 4:06 pm

Pull the head off and have a look?

Post by **noiseguy** » Thu Feb 26, 2009 1:09 pm

drewkuch wrote:True, ok.

Um, well what do i do next? i'm still at 30 psi compression. Spark and fuel ok. What to start with helping my compression or eliminating parts.

Rings i dont feel would make a dramatic change, but would help.
I think my reeds are ok.
What about crank seals?

You have low compression, and think it's the crank seals? Seriously? Not the rings? Why is that?

Wheelman-111 · Post by **Wheelman-111** » Thu Feb 26, 2009 1:58 pm

Greetings:

Evidence of crank seal failure would appear at the ends of the crank. If you have a side cover or an alternator full of molasses, you need to check that out. Otherwise, I'm with NoiseGuy. If you hear hoofbeats, think of horses, not zebras.

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Feb 26, 2009 4:33 pm

Bad crank seals wont cause bad compression, it just wont run or wont run right.

drewkuch · Post by **drewkuch** » Thu Feb 26, 2009 10:57 pm

well i'm getting little vacuum. And 30 psi.

I'm not sure, thats why i'm asking questions.

Yeah, i took the cylinder off about a month ago, looks alright and so does the piston.

I'm gathering that i'm not fit for a honda spree.

Kenny_McCormic · Post by **Kenny_McCormic** » Thu Feb 26, 2009 11:27 pm

You have got to be missing something if the bore is nice n shiny.

dgsoles · Post by **dgsoles** » Fri Feb 27, 2009 12:21 am

If you're not fit for a Honda Spree....maybe you should stick with power wheels, because internal combustion engines don't come much simpler than this, my friend.....

drewkuch · Post by **drewkuch** » Fri Feb 27, 2009 11:30 am

ha.

So where do i start next if its so simple.

The cylinder wasn't brand new, but it didn't have grooves and the rings were moving freely. Should i just buy a new set of rings and try them?

Wheelman-111 · Post by **Wheelman-111** » Fri Feb 27, 2009 11:43 am

Greetings:

DK axes:

ha.

So where do i start next if its so simple.

The cylinder wasn't brand new, but it didn't have grooves and the rings were moving freely. Should i just buy a new set of rings and try them?

Inspection means more than verifying the lack of gouges. Just because the piston rings "move freely" doesn't guarantee they provide an effective pressure seal in operation. Things can be worn out without visible signs of damage.

The Service Manual specifies dimensional service limit specifications. That requires Expensive Precision Measuring Equipment which costs more than a new bore, but might provide a fun learning experience. Maybe a machinist can mic your stuff and you can compare that to the Factory specs. I'm pretty sure you will find much amiss.

Unfortunately the Spree limits your choices for restoration to Honda-san, AFAIK. It appears clear to me that a fresh dimensionally-correct cylinder or a re-bore of yours to the first "oversize" piston and new rings will restore compression and the rest is up to your budding mechanical skills.

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