Author Topic: 03 3 13/16" build  (Read 952 times)

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Offline J.Kinkade

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03 3 13/16" build
« on: May 21, 2018, 02:10:30 AM »
hope can see pic's. have motor out and apart , had cases resized in Bridgeport with micro bore. am using Late EFI heads, Hammer billet manifold to allow carb. s&s premium lifters, adjustable push rods, collapsable tubes. Hammer Impact cams. Axtell 3 13/16" cast iron with JE flat tops (87c.i.d ) Bobby Wood Rebel 43.5 carb. going to use Australian made pipes, as have used them with good results at the track, before. will do a mild port job & fit 1.9" intake valves keep stock size ex valves. will set up for .600 lift. might use 1.750 ratio rocks or 1.725, just have to work out. but just want to ride in twisty's & mountains, also will take to drag strip to test & check what trap speed I can get. have 3" Hammer Sledge air cleaner ( off set ) hope to have it going by next month, waiting for parts.

Offline rigidthumper

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Re: 03 3 13/16" build
« Reply #1 on: May 21, 2018, 08:13:39 AM »
Should be a fun project- may I suggest a Bandit clutch to hold/use all the new found power.

Offline Hillside Motorcycle

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Re: 03 3 13/16" build
« Reply #2 on: May 21, 2018, 12:53:47 PM »
Those 88" XL's run well.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #3 on: May 21, 2018, 04:46:25 PM »
Should be a fun project- may I suggest a Bandit clutch to hold/use all the new found power.

yeh the Bandit one of the best clutch's!! I had a Bandit Super Clutch on my old kick start Shovel.

I'll try keeping the stock clutch, just add an extra stock plate ( I might have to use a surface grinder? ) reason I'll do this is, I have a Buell carb M2 and energy one clutch plates and don't care for it. I like the stock HD plates better. also had a twin cam dyna carb ( yes I'm old school ) the dyna I tried to keep looking stock . I had it performing well as was 88", when I got the HP & TQ up. At the track I was doing 1.6 60ft. then if I put it into 5th gear before speed traps clutch would slip bad ( stock clutch se spring ). so I held it in 4th & was reving to 7,200 bouncing off rev limiter in speed trap.
I was runing that way for a long time, then thought, I'll try an S&S clutch. it was a very good clutch!! but my 60ft times was not as good with the new clutch.
so this Bike I'll try stick with stock clutch ( it's a lighter bike too ) see what happens.
so not too worried about the clutch at this stage.
what I'm more worried about is the Flywheel's. but I'm lucky to have a good friend with a lot of experience with HD flywheels. so will work that out soon.
also want to keep the stock belt drive, so bit of clutch slip ok.

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #4 on: May 21, 2018, 04:47:42 PM »
Those 88" XL's run well.

Thank's Scott , I'm looking forward to it.

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #5 on: August 17, 2018, 06:24:13 PM »
well, heads finished & CC ed  had to inlarge chamber to drop comp to 10.5 for cam's I'm using . also fitted larger intake valves but keeping exhaust valves stock size, set up to take 650 lift using bee hive and performance 7mm after market valves ( better retainers ) had the JE piston skirts Dry Lub coated. will put all together mok up to check all clearances then build, having gear box set up for quick shifts. should be finished in a few weeks. then will ride a few thousand miles adjusting the set up. then off to long black Dyno, 1/4 mile see what trap speed is like ( I'll be a bit rusty , so not expecting quick 60ft, will just check trap speed, that will tell me what HP it makes ) tried to post pic's but said too large. so have to leave as don't know how to compress them. ( they are jpeg

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #6 on: September 24, 2018, 12:33:33 PM »
Well the Build close to completion , just taking time to get it set up right.
Flywheels have been split ( press fit pin type ) the bearings and pin came out like new, but big end of rods was like an egg, fixed that and flywheels have been balanced and balance factor changed to low 50's . the crank pin has been welded in. very happy with result.
Heads are done am only using the Hammer 560 lift impact cams and fitted larger intake valves stock exhaust  , had to set up so valves had right clearance . used beehive valve springs set up for 650 lift , so the springs last longer, as I'm planing on riding this a lot of miles & riding it to the track to race . Also gear box been set up by my friend he has been drag racing Harleys and setting up there gear box's 40 years. he did my last Harleys gear box and it was the quickest smoothest shifting gear box, I've had in a HD, plus could ride long distance with it.
also had to machine bottom of the Axtell barrels as pistons 60 thou down in bore, got them up to 40 thou.
have only got duel one piece tappered end pipes will modify baffles. I'm not too worried about all out HP. I'll test and tune on a DJ250i with latest software & will be tuning to get the most HP & TQ in around 5 seconds WOT or less as found that gives me the quickest ET at drag strip. thats what I use for bragging rights not a dyno print out that just tells HP & TQ @ RPM as RPM does not tell how long it took to make the HP & TQ and in standing quarter I will only have it WOT in each gear for around 3 seconds before shifting gear, so HP & TQ that take too long to show up won't be used. just explaining how I see it.
Summer coming up here too , but it's all year riding here.

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #7 on: November 01, 2018, 04:49:22 PM »
Bike is a runner, starts up easy, will be riding it next week ( it's hot here ). just got a set of one piece tappered end duel's, very solid built good chrome, a friend gave me. just have to wait till I ride it, see how they work. looking forward. also gear box rebuild gears back cut for quick shifts.
will post how it run's next week, this bike will get ridden a lot as well as taken to the drags, street class & ridden to the track ( 200 mile ride there )

Offline Wicked

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Re: 03 3 13/16" build
« Reply #8 on: November 06, 2018, 05:58:27 AM »
Great to see it Lakes! Awaiting on your impressions on it.....

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #9 on: November 10, 2018, 11:38:28 AM »
riding it now, love it, I have to first wear piston's in as, Barrel's Nodular Iron so no expand, forged piston's expand. just have to take time wearing in. I did lot of short rides stopping to cool motor. I have not taken it over 3,000 rev yet but it pull's smooth from 2,000 rev. pull's harder 2,000 to 3,000 than the stock cam 1200 with SE air cleaner , re jetted CV40 stock header's SE slip on's and Twin Tech adjustable ing did from 3,500. have late EFI heads cleaned up performance valves bu stock size exhaust valve's, larger intake valves, bee hive springs set up for 650 lift. cams are Hammer 560 impact, at 10.5 to one, flat top piston's 40 thou squish . bobby wood 43.5 Rebel CV Hammer Billit Manifold Hammer Billit Sledge Air Cleaner, Chrome Works  one piece Duel's no cross over ( look a bit restrictive, but the way the motor pull's low rev, I like!! I had a guy here in Australia pull the late press fit pin flywheels apart inspect bearings and pin, he know's his stuff & set up for the job. he said pin & bearings like new big end of the rod's shaped like an egg, so he resized rod big end, changed balance factor of flywheels to low 50's% welded crank pin. motor feel's very smooth idles smooth too ( the idle surprises a lot as so smooth ) still got a lot of wearing in to do before I can give it a rev. but am so happy it is so nice to ride, road it the 200 mile home, the Wood's CV getting 74mpg plus look like EFI. I think when I have it run in and go past 3,000 I'll have to hold on tight.

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #10 on: November 12, 2018, 07:33:34 PM »
Now have 648 miles up feels stronger all the time.
Guy who set up forks & shocks did a good job ( very firm )

Offline 1FSTRK

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Re: 03 3 13/16" build
« Reply #11 on: November 16, 2018, 02:28:34 PM »
Great thread, wish you could get the picture posting worked out, would like to see more.
Waiting for the track results to come in, sounds like it is running strong.
"Never hang on to a mistake just because you spent time or money making it."

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #12 on: November 18, 2018, 01:26:43 AM »
I'm not that good with computers, think it tell's me file too large, but they are compressed.
still runing motor in & rev limit set @ 4.5k , still have stock clutch, have 1,140 miles on motor will to another 1,000 mile then on my friends DJ 250i to check carbs AFR under load to about 6,000 as I don't like reving higher, at track I will probably go a bit higher in 4th gear as think I'll go through speed trap in fourth then pull clutch. just have to wait see.

Offline Hillside Motorcycle

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Re: 03 3 13/16" build
« Reply #13 on: November 30, 2018, 03:56:08 AM »
When we raced CE Class AHDRA, there was a cat that had an 88" XL that ran right on the 10.30 number very consistently.
On-board electric starter as well.
Just sent an 88" XL home to Rochester, NY, last Saturday.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"

Offline J.Kinkade

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Re: 03 3 13/16" build
« Reply #14 on: December 05, 2018, 11:14:09 PM »
When we raced CE Class AHDRA, there was a cat that had an 88" XL that ran right on the 10.30 number very consistently.
On-board electric starter as well.
Just sent an 88" XL home to Rochester, NY, last Saturday.

That's really moving!  what 60ft times? & what trap speeds? I'll be a happy man to run low 11's, & I'll be all smiles if I could break into high10's!!
good to see more 88" XL's out there!! I got a good friend about to go 88" in a year 2000 XL he has XB heads same barrels & pistons as me but he is going to use S&S 600 cam's & he has AIM pressure plate.
I now have 1,800 miles on mine rev limit still set at 4.5k still have stock clutch so just riding her normal. I love it!! pulls strong in 5th and stock gearing. I'm riding her the 200 mile up to the big smoke next week, to pull stock clutch put in an SE 9 plate, set rev limit up to 6.5 and check the jetting in the woods Rebel 435 carb, I got the new pipes from a friend they are like new. very well built chrome tapered end Duels no cross over and one piece look restrictive, but it sounds good and pulls good to 4.5k.  I have the Hammer impact 560 cams & S&S premium lifters ( nice & quite ) hammer billet manifold & Hammer offset sledge air cleaner.

what cam's & carb ( or EFI )  & pipes did the set up u just sent out have?
thank's
« Last Edit: December 05, 2018, 11:18:32 PM by J.Kinkade »