HarleyTechTalk

Quote from: Adam76 on April 21, 2020, 12:45:40 AM
One more question,  at what ccp do ypu need to ijnstall compression releases?  180?  185? 190? 

You install them if the starter won't turn the bike over. Often the case when the compression ratio is high, the bike is hot but sat for several minutes, and the tappets bleed down. S&S tappet travel limiters usually solve that.

In your case, don't worry about it. I don't think you're going to need any of it.

-JW

All good to know
CF=  Carbon Fiber parts

Good grief.

Quote from: JW113 on April 21, 2020, 09:11:51 AM

Quote from: Adam76 on April 21, 2020, 12:45:40 AM
One more question,  at what ccp do ypu need to ijnstall compression releases?  180?  185? 190? 

You install them if the starter won't turn the bike over. Often the case when the compression ratio is high, the bike is hot but sat for several minutes, and the tappets bleed down. S&S tappet travel limiters usually solve that.

In your case, don't worry about it. I don't think you're going to need any of it.

-JW

Thanks JW, so I'm ok at 183 ccp?
Cheers

"Keeping it real simple and very practical for budget and streetability reasons."

Then you ask me about "head work". 

Quote from: thumper 823 on April 21, 2020, 11:52:15 AM
All good to know
CF=  Carbon Fiber parts

LOL... In 1996? None!!!!

Quote from: Adam76 on April 21, 2020, 04:12:00 PM
Thanks JW, so I'm ok at 183 ccp?

Yep.

-JW

(p.s. lay off the calculators...)

Quote from: Deye76 on April 21, 2020, 04:18:13 PM
"Keeping it real simple and very practical for budget and streetability reasons."

Then you ask me about "head work". 

Sorry, if you misunderstood.

I was basically asking if I did go ahead and include basic headwork to the build, how much difference would it make and would it be worth it... that's all.

Thanks. But I'm guessing not.

Quote from: JW113 on April 21, 2020, 05:23:15 PM

Quote from: Adam76 on April 21, 2020, 04:12:00 PM
Thanks JW, so I'm ok at 183 ccp?

Yep.

-JW

(p.s. lay off the calculators...)

Cheers, yes l definitely need to lay off the calculators.... making my brain hurt

The trouble is, is what is basic?
It will mean different things to different people.
The three angle typical street valve grind settings are pretty basic.
It is all a very slippery slope from here as I have said.
If you pop off your springs you can at least check your you stem to guide wear, polish the backside of the valves .
Replace the stem seals.
look at the seat width...now we are well onto the "devil is in the details" which are getting way out of your parameters.
Wide seats for the million-mile bike
Narrow seats for the sport-minded ......needless to say I will stop.

For your application as I understand it, head work is a waste of money. But it's you're money, so you need to decide how to spend it to get the most return on investment. Have to point out once again, softail, rigid mount, probably not going to be banging a 6500rpm rev limiter very often if ever...

-JW

Quote from: JW113 on April 22, 2020, 08:04:38 AM
For your application as I understand it, head work is a waste of money. But it's you're money, so you need to decide how to spend it to get the most return on investment. Have to point out once again, softail, rigid mount, probably not going to be banging a 6500rpm rev limiter very often if ever...

-JW

Thanks JW,   appreciate your keeping it real and keeping my feet on the ground  😂

Quote from: jsachs1 on April 09, 2020, 02:18:00 PM
[attach=0,msg1341541] I just finished the heads for this build today. K.B. 9 cc dome pistons, 83 cc heads, EV 27 cam, .030" head gaskets. Should be 9.5:1 compression and 9.0:1 corrected  It will be together early next week.
John

Hey John, just curious with your builds like this one, do you ever suggest or use a good programmable ignition and single fire coil?  Does it add anything to the outcome?  Or is it really only helpful for more complex higher comp builds?
Thanks Adam

I use Daytona twinn tech as it allows you all sorts of options and dual plug if you ever want.
Plus it is SIMPLE

of all the EVO,s ive had , a REAL ( not a $350 one )port job did more than anything

Quote from: hbkeith on April 24, 2020, 07:09:51 AM
of all the EVO,s ive had , a REAL ( not a $350 one )port job did more than anything

Not without the Cam and Intake and even Pipe that compliment it... BTDT

We did a lot of Wiseco 10-1's with EV 27's back in the day. One thing i have not seen mentioned is to change the VOES setting to 6" HG. That will change to the retard curve in the ignition sooner. I think Softails stock are around 3 to 4" HG.

Quote from: Adam76 on April 23, 2020, 10:32:52 PM

Quote from: jsachs1 on April 09, 2020, 02:18:00 PM
[attach=0,msg1341541] I just finished the heads for this build today. K.B. 9 cc dome pistons, 83 cc heads, EV 27 cam, .030" head gaskets. Should be 9.5:1 compression and 9.0:1 corrected  It will be together early next week.
John

Hey John, just curious with your builds like this one, do you ever suggest or use a good programmable ignition and single fire coil?  Does it add anything to the outcome?  Or is it really only helpful for more complex higher comp builds?
Thanks Adam

This bike rolled in with a non programable SE ign. module. Since the bike is 1 in the owners collection, I'll just set up the VOES, and leave all else as is. If it was going to be a hot rod, I would change it to programable.
John

Quote from: jsachs1 on April 24, 2020, 02:35:33 PM

Quote from: Adam76 on April 23, 2020, 10:32:52 PM

Quote from: jsachs1 on April 09, 2020, 02:18:00 PM
[attach=0,msg1341541] I just finished the heads for this build today. K.B. 9 cc dome pistons, 83 cc heads, EV 27 cam, .030" head gaskets. Should be 9.5:1 compression and 9.0:1 corrected  It will be together early next week.
John

Hey John, just curious with your builds like this one, do you ever suggest or use a good programmable ignition and single fire coil?  Does it add anything to the outcome?  Or is it really only helpful for more complex higher comp builds?
Thanks Adam

This bike rolled in with a non programable SE ign. module. Since the bike is 1 in the owners collection, I'll just set up the VOES, and leave all else as is. If it was going to be a hot rod, I would change it to programable.
John

What was ccp on that one John ?

Quote from: hbkeith on April 24, 2020, 07:09:51 AM
of all the EVO,s ive had , a REAL ( not a $350 one )port job did more than anything

Thanks, when you say a REAL port job did more than anything else, what exactly do you mean? What did it really do above what was already achieved?
And what do you consider a "real" port job?
Cheers

Quote from: 98fxstc on April 24, 2020, 03:31:58 PM

Quote from: jsachs1 on April 24, 2020, 02:35:33 PM

Quote from: Adam76 on April 23, 2020, 10:32:52 PM

Quote from: jsachs1 on April 09, 2020, 02:18:00 PM
[attach=0,msg1341541] I just finished the heads for this build today. K.B. 9 cc dome pistons, 83 cc heads, EV 27 cam, .030" head gaskets. Should be 9.5:1 compression and 9.0:1 corrected  It will be together early next week.
John

Hey John, just curious with your builds like this one, do you ever suggest or use a good programmable ignition and single fire coil?  Does it add anything to the outcome?  Or is it really only helpful for more complex higher comp builds?
Thanks Adam

This bike rolled in with a non programable SE ign. module. Since the bike is 1 in the owners collection, I'll just set up the VOES, and leave all else as is. If it was going to be a hot rod, I would change it to programable.
John

What was ccp on that one John ?

98,  with that build bigboyz calc says  183ccp.  Be interesting to see what it actually comes out at.

Quote from: Adam76 on April 24, 2020, 06:28:35 PM
Thanks, when you say a REAL port job did more than anything else, what exactly do you mean? What did it really do above what was already achieved?
And what do you consider a "real" port job?
Cheers

He means somebody with flow bench, knows what he's doing, and maybe 700 to 1500 bucks later, has heads that flow gobs of air north of 6000 rpm.

Mr. Tractor Motor, is that what you are after? Or just a nice running Softail that is fun to ride on a daily basis? Your money. Don't listen to these guys. Don't listen to me either. What did Fleetwood Mac say? Go your own way.

-JW

Quote from: JW113 on April 24, 2020, 08:22:39 PM

Quote from: Adam76 on April 24, 2020, 06:28:35 PM
Thanks, when you say a REAL port job did more than anything else, what exactly do you mean? What did it really do above what was already achieved?
And what do you consider a "real" port job?
Cheers

He means somebody with flow bench, knows what he's doing, and maybe 700 to 1500 bucks later, has heads that flow gobs of air north of 6000 rpm.

Mr. Tractor Motor, is that what you are after? Or just a nice running Softail that is fun to ride on a daily basis? Your money. Don't listen to these guys. Don't listen to me either. What did Fleetwood Mac say? Go your own way.

-JW

What's with the attitude?

I know absolutely  nothing about head work and I'm just trying to learn.......
I have some people telling me that head work is essential and others a waste of money. Again,  I'm just trying to be really well informed.

Your input is respected,

Thanks

get a 3 angle valve job and be done with it for your combo, the heads already flow good enough.

If it were mine, I would while the heads are off install AV&V tulip shaped valves, Stock size exhaust, 1.900" intake. Have a known to understand Harley motor head flow and velocity needed for your application. Clean and match the seat to casting connections, smooth the intake walls and leave a light sanded finish in the intake side. The exhaust just cleaned up and matched, the polish the exhaust ports. Three angle valve job.

As long as the velocity is as good or better than OEM, you'll see a little more flow that will also improve mid-range and low end  little. Keeping the velocity as high as possible keeps the low end strong.