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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #51  
Old 18th November 2020
Pagey Pagey is offline
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I’m 300miles into my 1250 run in and must say this has completely changed the 885 for the better in all road conditions.
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  #52  
Old 18th November 2020
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Definitely more "driveable"... less throttle needed in all conditions... no need to rev it up as when it was 883...

About changing gear ratios... NO WAY! there is exactly why she now has all that "Instant Up & Go"!!! BUT.... if you are to ride on Highways and/or long trips.... then it should be a must or you will get sick of it.

For rural roads, City, and quick A to B,s it is just awesome.... I can not go that quick with my S&S 117 ci Chopper like I do with my Sportster in "limited" spaces.

Would (Will) I take her on a long trip like it is now? Yes!!! but I must be ready to take it easy on the H/Ways... 120/150 Kph max, and not for too long... I am noticing her sweet "cruising" spot is around 100/110 Kph (that's by ear)
but she goes fine at 150 too, but, I just don't dare to push her at that pace for longer than 20/30 mins at the moment.
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  #53  
Old 19th November 2020
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HD, I agree with you!

I'm hoping for more acceleration for around town riding, and just better performance from 55 to 70 when occasionally getting on the interstate. Not a big fan of freeway riding or lane splitting, which is inevitable here in SoCal. I had to lane split almost 20 miles one day last summer (huge accident caused a major traffic jam), a mentally exhausting experience.

I ride almost 100% on local roads, so having more acceleration in those conditions is good for me. I'd prefer "quicker" to "faster."

BTW, I love your cat avatar. Awesome.


John
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  #54  
Old 20th November 2020
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Quote:
Originally Posted by John Harper View Post
HD, I agree with you!

I'm hoping for more acceleration for around town riding, and just better performance from 55 to 70 when occasionally getting on the interstate. Not a big fan of freeway riding or lane splitting, which is inevitable here in SoCal. I had to lane split almost 20 miles one day last summer (huge accident caused a major traffic jam), a mentally exhausting experience.

I ride almost 100% on local roads, so having more acceleration in those conditions is good for me. I'd prefer "quicker" to "faster."

BTW, I love your cat avatar. Awesome.


John
Well mine is definitely quicker’ around town. Far more responsive to throttle control
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  #55  
Old 22nd November 2020
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Got a chance to ride this morning. Cold air today and light (but not wet) fog, perfect for cooling the engine. Added another 40 miles and now at 50 miles total.

The bike runs absolutely beautifully. No carb pops, no exhaust pops. Idles like a kitten purring. Took her on the freeway briefly, should have plenty of passing power now. I still like the stock gearing too. Spark plugs a light gray and both the same.

I could not be happier at this point. Well worth the investment.

John
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  #56  
Old 25th November 2020
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Quote:
Originally Posted by John Harper View Post
Got a chance to ride this morning. Cold air today and light (but not wet) fog, perfect for cooling the engine. Added another 40 miles and now at 50 miles total.

The bike runs absolutely beautifully. No carb pops, no exhaust pops. Idles like a kitten purring. Took her on the freeway briefly, should have plenty of passing power now. I still like the stock gearing too. Spark plugs a light gray and both the same.

I could not be happier at this point. Well worth the investment.

John


Enjoy it.... it gets better by the day!!!

(Do not "Baby it" neither!!!) get her up to 4500 rpm every now & then!!! Short and without going WOT!!!!

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  #57  
Old 25th November 2020
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As the rings seated it seemed mine was picking up power during the break-in period. Also, the pipes started more yacking and talking back and forth more. I would not gear it to 1200 specs as I'm hardly in 5th unless I'm up around 70. I forget how you built this.
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  #58  
Old 25th November 2020
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I just did a basic 1250 conversion. At 110 miles now, definitely seems to be breaking in. Great weather for this process, clear and cold out the last couple days. Gonna put some more miles on tomorrow.

I'm happy with the 883 gearing. I like the 60-70 acceleration on the highway. Just been revving up, and coasting down a lot.

I think I actually got it onto the mainjet today, WOW!

Happy Thanksgiving!!! I know what I'm thankful for this year. More power.

John
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  #59  
Old 25th November 2020
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You are near the coast John ?
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  #60  
Old 25th November 2020
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Quote:
Originally Posted by rocketmangb View Post
You are near the coast John ?
Yes I am. Only about 1/2 mile from a nice stretch of PCH along the coast riding north and a couple routes east to the El Camino Real and back around.

You're welcome anytime.

John
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