Bee Jay's hood lightening mods!
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 3,960
Likes: 573
From: Lompoc, CA. Santa Barbara County
Hot Dang!!!!! This hood gets plenty of attention and comments, all positive. I was having second thoughts about the window but loving on the Vents, but everybody loves it. One lady coworker stopped me in the middle of the street to get a look, and then said it was cool. Now I gotta polish and clean up, maybe switch valve cover styles. The vents are a lot more transparent than expected, so you can see the engine from three holes in the hood. You can't creep in a yellow vette with window and vents in the hood.
Bee Jay
Merry Christmas Everyone!
Bee Jay
Merry Christmas Everyone!
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 3,960
Likes: 573
From: Lompoc, CA. Santa Barbara County
Some interesting information. I'm always glad to see others who are looking outside the box for lighter parts to put on our overweight antiques. 
Prior to putting the C5 m/c on my car I looked at several aluminum OEM master cylinders, but kept striking out finding one that would fit. I have a couple similar looking master cylinders in a parts box for future installation onto my street rod, but my experience was that they wouldn't fit the Corvette booster. I've got a spare booster out of a (IIRC) '72, and while the bolt holes line up, the pilot hole in the booster is too small for the m/c to engage into. Do you know if that m/c will fit the Corvette booster? I was wondering if some of the C2500 truck applications use a Hydra boost, in which case the m/c would definitely work in BeeJay's application. This m/c seems to be much heavier (percentage wise) than a C5 part, but still much lighter than the cast iron C3 part.
Prior to putting the C5 m/c on my car I looked at several aluminum OEM master cylinders, but kept striking out finding one that would fit. I have a couple similar looking master cylinders in a parts box for future installation onto my street rod, but my experience was that they wouldn't fit the Corvette booster. I've got a spare booster out of a (IIRC) '72, and while the bolt holes line up, the pilot hole in the booster is too small for the m/c to engage into. Do you know if that m/c will fit the Corvette booster? I was wondering if some of the C2500 truck applications use a Hydra boost, in which case the m/c would definitely work in BeeJay's application. This m/c seems to be much heavier (percentage wise) than a C5 part, but still much lighter than the cast iron C3 part.Bee Jay
Drifting
Joined: Jul 2002
Posts: 1,944
Likes: 20
From: The only Corvettes in Highett Victoria
Yes you can!
[QUOTE=Bee Jay
The M2903 is 1.750" external and the hdyroboost sleeve is about 1.6". You can't get a 1.750" sleeve into a 1.6" hole.
Bee Jay[/QUOTE]
Beejay,
You're obviously not using a big enough hammer!
Regards from Down Under.
aussiejohn
The M2903 is 1.750" external and the hdyroboost sleeve is about 1.6". You can't get a 1.750" sleeve into a 1.6" hole.
Bee Jay[/QUOTE]
Beejay,
You're obviously not using a big enough hammer!
Regards from Down Under.
aussiejohn
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
Update, M2903 will not fit into hydroboost. I think I need M2904, which is built for the hydroboost. I'll see if NAPA will exchange for me tomorow. The M2903 is 1.750" external and the hdyroboost sleeve is about 1.6". You can't get a 1.750" sleeve into a 1.6" hole.
Bee Jay
Bee Jay
Wonder if the M2903 will work with stock booster.
Thread Starter
Safety Car
Joined: Nov 2005
Posts: 3,960
Likes: 573
From: Lompoc, CA. Santa Barbara County
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
I must say that I do not know. My best guess, as a software engineer, with zero experience in fluid dynamics, is that the brakes would be grabbier. 
I do appreciate you measuring the booster for me, though.
I do appreciate you measuring the booster for me, though.
Tech Contributor
Joined: Jun 2004
Posts: 20,827
Likes: 959
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
Simple hydraulics. The bigger bore should reduce the pedal travel in cases where the pads/pistons got kicked back during spirited driving, and pedal effort will be slightly higher. (We'll leave it as an exercise for the student to do the bore area math.)
Drifting
Joined: Jun 2012
Posts: 1,990
Likes: 183
From: Port St. Lucie Fl
Hot Dang!!!!! This hood gets plenty of attention and comments, all positive. I was having second thoughts about the window but loving on the Vents, but everybody loves it. One lady coworker stopped me in the middle of the street to get a look, and then said it was cool. Now I gotta polish and clean up, maybe switch valve cover styles. The vents are a lot more transparent than expected, so you can see the engine from three holes in the hood. You can't creep in a yellow vette with window and vents in the hood.
Bee Jay
Merry Christmas Everyone!
Bee Jay
Merry Christmas Everyone!
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Thread Starter
Safety Car
Joined: Nov 2005
Posts: 3,960
Likes: 573
From: Lompoc, CA. Santa Barbara County
Bee Jay
