Biggest Bang for the Buck TC 95" Combinations

[Deye76]

Haven't seen the combustion chamber in the MVA head, but looking at a photo of the piston, they have a substantial squish area. Now if the deck height is good, they might make some decent power without the detonation issues.

[Don D]

The old HTTC CNC heads flowed like a turbo toilet, very big valves and ports, but the velocity was relatively low and most 95" motors which were the bulk of HTCC builds lacked bottom end torque. OK for some guys and not so OK for others. Put them on a 113" motor new story.
I have flowed the SE 110 heads and was surprised how poorly they were out of the box. One head had a big gouge out of the short turn on the exhaust side, a casting flaw reworked in QC no doubt. Not a good place to randomly grind a divot.

[555]

WOW
bottom line. Please I have a set of 05 heads.That I bought to have done before I pulled my motor down. along with other stuff for my 95 build. to have everything ready to go an not drop so much cash at one time.
I want a John Deer Tractor an not peak Hp. so how are the 05's for this  thanks every one   

[fbn ent]

I'm wanting to go with something like the Hippo. My question is, with 70,000 miles on the engine ('02), should I do the wheels to? I don't know how they stand up.
R.

[GoFast.....]

The old HTTC CNC heads flowed like a turbo toilet, very big valves and ports, but the velocity was relatively low and most 95" motors which were the bulk of HTCC builds lacked bottom end torque. OK for some guys and not so OK for others. Put them on a 113" motor new story.
I have flowed the SE 110 heads and was surprised how poorly they were out of the box. One head had a big gouge out of the short turn on the exhaust side, a casting flaw reworked in QC no doubt. Not a good place to randomly grind a divot.

Right on Don, I can't count the number of guys that put the HTCC CNC Heads on a 95 and were soarly dissapointed. The head can be used on certian setups but for many people it was to much head for their setup

[Don D]

If anyone is considering the "Kompressor" heads why not just buy the logo and mill your own heads. Done deal

[KingofCubes]

Haven't seen the combustion chamber in the MVA head, but looking at a photo of the piston, they have a substantial squish area. Now if the deck height is good, they might make some decent power without the detonation issues.

Looking in the SE catalogue the piston/ combustion chamber thing is very misleading. Wish I could see a picture of the MVA head.

[Deye76]

Haven't seen the combustion chamber in the MVA head, but looking at a photo of the piston, they have a substantial squish area. Now if the deck height is good, they might make some decent power without the detonation issues.

Looking in the SE catalogue the piston/ combustion chamber thing is very misleading. Wish I could see a picture of the MVA head.

Yea I agree. Hopefully they were aware of the lack of squish with the HTCC's and have done something to correct. Not a head porter but 2.125" intake valves (in the MVA's) seem big for good velocity,the kind you and R&R get with 1.940" 's.

[Bakon]

By lack of squish on the HTCC are you referring to 103 and 113 pistons. Certainly the 95 has more squish area than any HD offerings with the two different angles on the piston and the large side protrusions up into the head. They are a PIA to measure the squish with all the area on the 95 piston.

[Deye76]

By lack of squish on the HTCC are you referring to 103 and 113 pistons. Certainly the 95 has more squish area than any HD offerings with the two different angles on the piston and the large side protrusions up into the head. They are a PIA to measure the squish with all the area on the 95 piston.

So your saying flat top set ups from the factory have less squish than a 95"HTCC?
Those that have measured squish on a 95" HTCC builds that were bolted together find almost no squish.....80thou instead of the desired .030"

[Hillside Motorcycle]

The old HTTC CNC heads flowed like a turbo toilet, very big valves and ports, but the velocity was relatively low and most 95" motors which were the bulk of HTCC builds lacked bottom end torque. OK for some guys and not so OK for others. Put them on a 113" motor new story.
I have flowed the SE 110 heads and was surprised how poorly they were out of the box. One head had a big gouge out of the short turn on the exhaust side, a casting flaw reworked in QC no doubt. Not a good place to randomly grind a divot.

Agree on those heads, as we have an Ultra Classic, 117" on the drum now, with 400G cams, 45Mik, RB Header, DTT, heads have been re-worked by us, and it is currently rolling 123+/128+, peak torque at 3500, and tune not finalized.
Same heads on a 95" are a turd, as the velocity is so poor, there is not proper cylinder fill occuring.

[Don D]

WOW
bottom line. Please I have a set of 05 heads.That I bought to have done before I pulled my motor down. along with other stuff for my 95 build. to have everything ready to go an not drop so much cash at one time.
I want a John Deer Tractor an not peak Hp. so how are the 05's for this  thanks every one   

How about both for not a small fortune?
As easy as dropping out of bed by accident! You will need a crank with less than .002 runout. The 05 heads are my favorite as they have the old ports and the beehives and 7mm valves from the factory.
The recipe
Woods TW5g cams
Good pipe, can decide on that based on the model bike
Compression (via flatops) adjusted by milling to 10.2/1
Street Port heads with 1.900 and 1.57 modified valves
Great tune
Similar bikes have made 105/115 SAE and are very fast revving.

If need be (higher crank runout) the cams can be converted to roller chain "conversion" by Herkobagger and the roller chain drive can be used or the wheels pulled and fixed, true and weld. This is not that expensive and the roller motors are not hard to split cases.

[GoFast.....]

I Agree with Don for stump pulling power

[Bakon]

By lack of squish on the HTCC are you referring to 103 and 113 pistons. Certainly the 95 has more squish area than any HD offerings with the two different angles on the piston and the large side protrusions up into the head. They are a PIA to measure the squish with all the area on the 95 piston.

So your saying flat top set ups from the factory have less squish than a 95"HTCC?
Those that have measured squish on a 95" HTCC builds that were bolted together find almost no squish.....80thou instead of the desired .030"

This is the area I was talking about on a 95 HTCC piston, looking down. The raised areas I would think give much more area for squish than a flat top with a bathtub chamber. I hope you can see my scan and the areas measured.


[attachment removed after 60 days by system]

[Bakon]

Try this one

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resize and upload to one of the free sites, fsg
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[attachment removed after 60 days by system]

[Bakon]

I cant open the first one from the internet, but I can see the second one. Is there a better way to post this? If you can see it, the numbers are thousands measured with a .030 gasket. Anyways Im off subject, just wanted to show the HTCC heads will work if time is used to set them up.

[ederdelyi]

SHO,
Take it from one who made those heads produce as much or more TQ and HP from a 95" than many ... yer beating a  . I'll be the first to admit that if John Deere is what is desired there are "better" choices and I said that openly on more than one occasion. You got them to work for you and you are satisfied with the results. Be happy with that and don't waste your time with folks who are convinced there is only one way to do things.

"Different 'strokes' fer different folks", dont'cha know? :>)

[Bakon]

Ed I believe you are one of many that walked me through the work. i will agree, many ways to skin the cat.

Hillside- what work to go 117 to the head? Is the piston an Axtell type with a reworked band?

I know the 103 and 113 have narrow squish compared to the 95 with matches the factory angles inside the head.

[KingofCubes]

By lack of squish on the HTCC are you referring to 103 and 113 pistons. Certainly the 95 has more squish area than any HD offerings with the two different angles on the piston and the large side protrusions up into the head. They are a PIA to measure the squish with all the area on the 95 piston.

So your saying flat top set ups from the factory have less squish than a 95"HTCC?
Those that have measured squish on a 95" HTCC builds that were bolted together find almost no squish.....80thou instead of the desired .030"

This is the area I was talking about on a 95 HTCC piston, looking down. The raised areas I would think give much more area for squish than a flat top with a bathtub chamber. I hope you can see my scan and the areas measured.

This in my experience is a funky way too gain squish area as it also restricts flame travel and slows down the burn. Have seen many dead spots with this set up. The fastest burn seems to be with the stock 88 combustion chamber and a flat top piston, then the stock chamber with a  little dome on it, then the modified HTCC head with the Axtell piston. The R&R stage 5 tighter combustion chamber (more flat squish are) beats them all. 

[Deye76]

SHO, my comments about HTCC and squish come from the fact that likely 99% of HTCC builds are not done with attention to detail that you did. If not for Ed E. most wouldn't even know where to begin. They have squish, but you gotta work for it. I stand by my belief that H-D  came out with components (MVA heads/pistons) that don't require dealer wrenches to go through that level of detail for a build. Bolt 'em together and go.

[Don D]

I stand by my belief that H-D  came out with components (MVA heads/pistons) that don't require dealer wrenches to go through that level of detail for a build. Bolt 'em together and go.

Hard to say. When they get some out there we will see the results, when combined with their suggested parts like an 11/1 113" motor and SE264 cam. The squish is just an element of the bigger picture. I for one will need to be convinced these heads will perform better than some of the tier 1 aftermarket cast heads or modified stockers.

[Deye76]

I agree Don, I'm not suggesting they will perform bettter, just address squish which leads to detonation, and gets bad press on the boards etc, etc.

[se]

I stand by my belief that H-D  came out with components (MVA heads/pistons) that don't require dealer wrenches to go through that level of detail for a build. Bolt 'em together and go.

Hard to say. When they get some out there we will see the results, when combined with their suggested parts like an 11/1 113" motor and SE264 cam. The squish is just an element of the bigger picture. I for one will need to be convinced these heads will perform better than some of the tier 1 aftermarket cast heads or modified stockers.

absoluty  ....

[M.PRUCINSKY]

S/E Pro Compressor heads Part #17044-08

http://harleytechtalk.net/htt/index.php?topic=1768.0

Link wont let me in

[FSG]

S/E Pro Compressor heads Part #17044-08

http://harleytechtalk.net/htt/index.php?topic=1768.0

Link wont let me in

Sorry, been doing some house keeping, go

HarleyTechTalk > Documents & FAQ's > Instruction Sheets that have been found > HD > Instructions > Instruction Sheets

http://harleytechtalk.net/htt/index.php?topic=2382.0