SE heads

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Nov 27, 2007 | 04:07 PM

#41

Firetender

Road Warrior

Joined: May 2006

Posts: 1,479

Likes: 4

From: SoCal

RE: SE heads

Quote:

ORIGINAL: forbidden

Firetender; I see you have a simular set I have. Do you have the magnetii injection? If so, are you running a Power Commander and what map? Also, what compression ratio?

Thanks.

Forbidden, I have the Magnetti-Marelli EFI.Before the work started, the bike was a Stage II 95" with SE203 cams (HD big-bore kit). I sent the throttle body out to BC Gerolomy for modification asthe stock two-runnerbutterfly setupis apparentlythe weakspot of modifying the MM-era bikes. The porting shop downloaded a PCIII-usbtypical map for my setup, I don't know it's ID # offhand. The PCIII is mated to the Stage II HD download - a "limp home" mode if the PCIII fails. The compression ration is 10.5:1. Detonation is minimized (per industry software program) in this MM-era engine setup by using a 0.40 cometic gasket rather than a 0.30, although it's not really an issue either way with my driving style. I'll be honest here, If I had reallydeep pockets, I'd be using the ThunderMax MM conversion package as I could see better gas mileage and no need for a dyno tune. But alas, there was only so much money in the insurance payout, and I'm raising my own scratch for the dyno tune (hey, it's California, everything costs a little more here!!)

As a result of the modified throttle body, I don't have any driveability issues with the Stage III setup. The bike runs considerably cooler with the PCIII and headwork.

Nov 28, 2007 | 12:16 AM

#42

mud

Club Member

Joined: May 2006

Posts: 14,564

Likes: 9,225

From: the 50s & the 60s

RE: SE heads

Quote:

ORIGINAL: Firetender

Quote:

ORIGINAL: Dalton
...And I agree on the crack pipe quote...LMAO

According to the porting machinist,

the SE heads are a good out-of-the-box choice toportwith the focus on flow velocity.

Based onbuilding experienceand dynomometer HP/Torque results,

it would take considerable rebuilding,

welding

and CNC work to get the same results from stock HD heads.

***************************************

Sounds like someone has fed you a line of bulllshit.

mud