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#Post#: 54170--------------------------------------------------
Winter project soon- need advise
By: 98TUNNER Date: October 14, 2020, 11:05 pm
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So unfortunately the white stuff will be flying soon... So I
need everyone's advise on which way I should go with my project.
I have two almost complete rollers both lt250r's a 91 and a 87.
The 91 chassis is a little rougher then the 87 but still usable
with a little work. My question is, is it worth putting the
time into the 91 chassis to make it usable. Do they ride/handle
better then the 87's. It will be used mostly for aggressive
trail riding. Have the 87 engine all rebuilt and ready to be
brought back to life. Just not sure which one to
rebush/rebearing and paint.
#Post#: 54172--------------------------------------------------
Re: Winter project soon- need advise
By: 2strokebandit Date: October 15, 2020, 5:09 am
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wanna stick to the og frame (either 91 or 87)? or you wanna go
a hybrid route by getting a modern ltr frame and do a heart
transplant.
for myself I am looking for a spare lt500 motor and am planing
throw it in to an ltr frame this winter. letīs see :)
"WINTER IS COMING" HOUSE STARK ;)
#Post#: 54173--------------------------------------------------
Re: Winter project soon- need advise
By: 98TUNNER Date: October 15, 2020, 8:03 am
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Yes I want to stick with original frame. Just want to know which
of the two would be better to use.
#Post#: 54174--------------------------------------------------
Re: Winter project soon- need advise
By: 2strokebandit Date: October 15, 2020, 8:10 am
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donīt know the difference really since I havenīt own any 250 but
hereīs a quote from Wikipedia:
"The beaner year", many different changes occurred within this
production year, sometimes making parts hard to match up.
The major changes were in the frame, engine, swingarm, and
a-arms. The most visible change is in the frame right in front
of the cylinder the 85-86 frame has a single down bar, but the
'87+ has a single wishbone down-tube. The 85-86 exhaust goes out
the side of the cylinder and the '87+ goes straight out the
front in between the split downbar, hence the head pipe design
changed for '87+. For '87+, a head motor mount was added and
connects the engine to the backbone of the frame (under tank).
The 85-86 is also a non powervalved motor as the '87+ have
powervalves . The front shocks are also about 3" longer than
previous models. The air intake from the carburetor to the
cylinder is in a 5 bolt pattern and larger than the other years
providing more air flow. Hence, the 87's are desired by tuners
and racers for the larger base air flow. The 1987-on LT250R and
the LT250R's big brother, the LT500R or Quadzilla, used the
5-bolt intake design. Also the '87+ used a 6 speed transmission
instead of the 5 speed used on the 85-86 models. The engine
color was changed from silver used on the 85-86 models to blue
for the '87+ models.
For the '87+ model, the swingarm design was changed to a more
"beefy" design after cracking / breaking issues with the 85-86
swingarm design. Clearly, the Suzuki engineers underestimated
how hard their customers could ride their product. However, the
'87+ swingarm will mount to the 85-86 frame with some other
minor equipment swap (i.e. rear shock, link). The '87+ rear axle
carrier includes forward-reverse slide chain tensioning rather
than the 85-86's rotary tensioning method. The '87+ carrier
housing slides forward and reverse and then is held in place by
four vertical bolts and two rear horizontal bolts whereas the
85-86 carrier was held with a clamp or pinch design.
The '87 and '88 rear axles continued to have 24 splines axles
that were the same as the 85-86 models. In '89, this was changed
to a 26 spline axle similar to the LT500R. The hubs on the 1987
models went to a 5/130 bolt pattern similar to the LT500R). This
was in contrast to the 4/130 bolt pattern of 85-86. The front
fenders are the same and will swap between any year. The rear
fenders will swap between any year, but the '91 and '92 model
years were different under the seat in order to access the air
filter which was relocated due to the redesign of the rear
suspension. The '91 and '92 rear plastic actually has a curved
metal bar riveted under the seat to help support the plastic due
to the larger void in the plastic moulding necessary to access
the air filter. (Note that the original rear plastic for '85 -
'90 is no longer available from Suzuki. All new rear plastic is
the '91-92 style with the riveted bar under the seat.)
The seats changed drastically in '87. They flare out at the rear
(like a "T") while the 85-86 has a straight seat. There are also
some cosmetic differences between the seats of various years.
'85 had yellow hollow letters spelling "Suzuki" on the sides. In
'86, they changed these letters to white. On the "T" seat in
'89, they added the words "QuadRacer" to the back in white
letters. In '91 and '92, they added splashes of teal all
throughout the blue seat in a "camo" type of pattern.
#Post#: 54175--------------------------------------------------
Re: Winter project soon- need advise
By: andys92 Date: October 15, 2020, 7:51 pm
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91-92 frame was stronger ( but heavier)
Rear suspension is better on the 3rd gen
Everyone raves about the 87 being the best and most powerful
engine but most engine guys dont care as they can make power
from either.
For trail riding ,I'd build a hybrid with the 3rd gen
frame.Thats what I did ,Great for trails
#Post#: 54176--------------------------------------------------
Re: Winter project soon- need advise
By: 98TUNNER Date: October 15, 2020, 9:05 pm
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Tnks bandit I knew the differences between the 3- generations.
Just was wondering if it was worth the hassle to fix up the 3rd
gen frame.
#Post#: 54177--------------------------------------------------
Re: Winter project soon- need advise
By: 98TUNNER Date: October 15, 2020, 9:07 pm
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Andy What did you hybrid on your 3rd generation?
#Post#: 54178--------------------------------------------------
Re: Winter project soon- need advise
By: andys92 Date: October 16, 2020, 5:58 am
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Put the 500 in it
Makes a great trail quads with all that torque
#Post#: 54180--------------------------------------------------
Re: Winter project soon- need advise
By: 98TUNNER Date: October 20, 2020, 6:26 am
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Got ya. I want to do that in a 400 chassis someday..
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