HP/TQ gains from installing ported heads on a stage 1 stock cam 96 ci engine ?

[strokerjlk]

I put a set of HDSP Don Dorfman's heads on my stock 96 ci stage 1 bike .
Stock 2007 cams , Green air filter with SE backing plate . Reinhert true duals . ( old style 3.5 performance baffles .
Looking at the dyno sheet , what will the gains be HP/ TQ wise ?
Leave your prediction . Winner will get an "at a boy "
Run # 13 ( blue graph ) is the run I will use as the final stage 1 baseline .
78.40 Hp 97.53 TQ

[Ancient]

I'm guessing 84/104

[hdmanillac]

85/105

[bulldog68]

83/101

[UltraNutZ]

with those heads, the lack luster performance of a true dual on an otherwise stock bike, but the added improvement with the old style 3.5 mufflers..

I'll go 88/109

[Durwood]

89/105

[u4hd2]

85/100

[prodrag1320]

jim,do you have a complete flow chart? before my prediction,im wondering what the heads are flowing @ .500 (the 285/223 wont even come into play)don't want to get "picky" about this,but heads should be ported for the combination being used,for one,the 1.710 runners are too big for a stock cammed,96" motor.this test should be for what cam don ported the heasds for,then try with stock vs. ported heads

[1FSTRK]

Jim please give us the new CCP with these heads.

[prodrag1320]

that's important to,unless they were milled to the original cc`s,the bigger valves & unshrouding will gain 3-5 cc`s

[krwson]

83.4-102.5

[Tireman]

86/105

[Jonny Cash]

87/105

[strokerjlk]

jim,do you have a complete flow chart? before my prediction,im wondering what the heads are flowing @ .500 (the 285/223 wont even come into play)don't want to get "picky" about this,but heads should be ported for the combination being used,for one,the 1.710 runners are too big for a stock cammed,96" motor.this test should be for what cam don ported the heasds for,then try with stock vs. ported heads

The flow sheet is in this thread as an attachment in Dons post .
I couldn't copy it , or I would post it here .
http://harleytechtalk.com/htt/index.php/topic,88223.0.html

[attach=0]

[strokerjlk]

Jim please give us the new CCP with these heads.

I will get the CCP the first chance I get .
Heads were surfaced .004 and .006 to achieve 85 cc's

[BUBBIE]

 

My Guess is 86 HP and 103 tq.

signed....BUBBIE

[dynaglide]

depends on the dyno and operator   

[strokerjlk]

with those heads, the lack luster performance of a true dual on an otherwise stock bike, but the added improvement with the old style 3.5 mufflers..

I'll go 88/109

Curious what lack luster performance you are talking about ?
This happens to be my best stage 1 96 ci I have ever tuned .
2 nd best is also a set of RH/TD's on a 2007 road king .
Round up all the stage 1 96 dyno sheets you can . Show me how many 97 tq you find .

[strokerjlk]

jim,do you have a complete flow chart? before my prediction,im wondering what the heads are flowing @ .500 (the 285/223 wont even come into play)don't want to get "picky" about this,but heads should be ported for the combination being used,for one,the 1.710 runners are too big for a stock cammed,96" motor.this test should be for what cam don ported the heasds for,then try with stock vs. ported heads

I agree with most everything your saying .
Let's pretend I just ordered a set of Dons off the shelf street heads .or a set of E bay ported heads . Don has already said he would have recommended his pro street TQ head for this test .
But he knows I am going to put some kind of cam in it. I gave him a couple examples . But won't be using either of those at first .
I wanted to set the cc's at 79-82 and pump the compression to it . Don wanted to leave it at 85 cc as that is the average . I don't blame him . He even offered to set them at any cc I want after this test . I won't do that.  But I will put a cam in it like it is .

[UltraNutZ]

haven't seen that TD head pipe perform very well on many tunes with a stock motor such as what you indicated - a built motor is a different story.  I'm not criticizing you or anything you're saying stroker.  That's just my experience, and the disclaimer is, I'm NOT a tuner. 

[Hossamania]

I started following this build in the link Jim posted,  and it was pretty impressive the gains that he got on that 96" stage one motor. A true example of what a proper tune can do.

[strokerjlk]

haven't seen that TD head pipe perform very well on many tunes with a stock motor such as what you indicated - a built motor is a different story.  I'm not criticizing you or anything you're saying stroker.  That's just my experience, and the disclaimer is, I'm NOT a tuner.

It gets a bad wrap . Actually a pretty good pipe.

[UltraNutZ]

It gets a bad wrap . Actually a pretty good pipe.

no doubt it does  .  And as stated above I think a LOT of what is missing from a good pipe, muffler, cam, head, air filter combo is the tune itself.  People spend (I see a lot of it on these forums and quite a bit on jobs I do as well) gobs of $ on go-fast parts only to cheap out on the most important piece of it, the tune - and then try to tune these bikes themselves.  Some get them close, some couldn't get it close if their lives depended on it regardless what device they tune with.

[prodrag1320]

jim,do you have a complete flow chart? before my prediction,im wondering what the heads are flowing @ .500 (the 285/223 wont even come into play)don't want to get "picky" about this,but heads should be ported for the combination being used,for one,the 1.710 runners are too big for a stock cammed,96" motor.this test should be for what cam don ported the heasds for,then try with stock vs. ported heads

I agree with most everything your saying .
Let's pretend I just ordered a set of Dons off the shelf street heads .or a set of E bay ported heads . Don has already said he would have recommended his pro street TQ head for this test .
But he knows I am going to put some kind of cam in it. I gave him a couple examples . But won't be using either of those at first .
I wanted to set the cc's at 79-82 and pump the compression to it . Don wanted to leave it at 85 cc as that is the average . I don't blame him . He even offered to set them at any cc I want after this test . I won't do that.  But I will put a cam in it like it is .

that's cool,like I said,i don't want to sound like im picking the test apart.i agree with don leaving at 85cc (most likely that's what the heads were to begin with).its just that (from what ive seen) sometimes over porting (from putting ported heads on a stock motor)can actually lower tq.it`ll be intersesting.if you ever wanted to do something like this on a mild build (cams only)and try a set of my street port heads,let me know,ide do up a set for ya

[86fxwg]

91/103