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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 01-03-2003, 12:42 AM   #11
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Quote:
Originally Posted by Azwed
Hmh an trick that some SCCA racers use to increase air flow in the engine compartment is to put spacers on the back of the hood. Lift the back up just enough to provide a 1/4 inch gap and it will give you lots of flow over the engine.

Lets do a little math to see how much area for air flow you are getting.

I am not sure how wide the back of the Bonne'* hood is so I will just pull a number out of my ***. We will say 50 inches wide for the back of the hood.

50*1/4 = 12.5 Square inches.

If you punch 6 louvers in the top of the hood with each louver being 4 inches long and with a 3/8 inch gap you will get 9 square inches for air flow.
Ok Azwed, I like this.....but we can simplify it by simply removing the weatherstrip along the trailing edge. Or even just sections of it. As long as no nasty fumes get pulled into the climate control.......But I'd still like to duct some air specifically over the heat sink fins on the Eaton. I've got my ideas already, so I'll post what I come up with when I get it modelled.
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Old 01-03-2003, 12:50 AM   #12
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Quote:
Originally Posted by willwren
Quote:
Originally Posted by Azwed
Hmh an trick that some SCCA racers use to increase air flow in the engine compartment is to put spacers on the back of the hood. Lift the back up just enough to provide a 1/4 inch gap and it will give you lots of flow over the engine.

Lets do a little math to see how much area for air flow you are getting.

I am not sure how wide the back of the Bonne'* hood is so I will just pull a number out of my ***. We will say 50 inches wide for the back of the hood.

50*1/4 = 12.5 Square inches.

If you punch 6 louvers in the top of the hood with each louver being 4 inches long and with a 3/8 inch gap you will get 9 square inches for air flow.
Ok Azwed, I like this.....but we can simplify it by simply removing the weatherstrip along the trailing edge. Or even just sections of it. As long as no nasty fumes get pulled into the climate control.......But I'd still like to duct some air specifically over the heat sink fins on the Eaton. I've got my ideas already, so I'll post what I come up with when I get it modelled.
That is the one thing I am worried about with using this method is the fumes getting sucked in the vents. This type of mod is mainly done on track only SCCA cars so the climate control does not matter since most of them don't have one. I would just play with it and see what works. The vents don't go all the way across the back of the hood so you could just remove the sections where the vents aren't.
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Old 01-03-2003, 12:54 AM   #13
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What if you made a new engine cover? One that was designed to move air over the blower. The engine cover could act as a duct instead of a blanket. It could be setup to pull air from the front corner(*) and route it off the back off the */c? Just a thought. Maybe someone who knows more about part fabrication may be able to tell how logical this would be to produce.
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Old 01-03-2003, 01:05 AM   #14
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I'm already planning on modifiying my cover similar to the Series2 cover that the Rat posted on BA. This will leave it 'pretty', but also able to breathe. That might be this weekend.
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Old 01-03-2003, 10:10 AM   #15
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I really liked that engine cover. I want to do something similar to my 93 SSEi.
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Old 01-03-2003, 12:04 PM   #16
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Quote:
Originally Posted by jeffrey10x2
here is an idea, instead of the godly bumps on the hood for a hood scoop, how about using NACA ducts, like they do in nascar and have the blended into the hood, then you can duct the air to the sc and also have fresh cool clean air to the airfilter too.
This is an idea that I shared with Will when we first spoke about the external SC cooling! I was thinking that the '73 GTO/'73-'75 Grand Am NACA scoop inserts could be picked up from a boneyard. I found some on ebay for $109, but I need to do some more measuring to make sure I can route them correctly. In theory, one scoop would be my CAI inlet and the other would be my SC cooling duct. An intercooler would be nice, but it is $$. As for the heat extractors, I was thinking along the lines of venting at the back of the hood as well. The sleeper effect will be lost if I hack my hood for the NACA Scoops, but heat extractors may get a rice label--so I will try to do something effective yet subtle. The other consideration I have to make is how I will create the duct work for the intake. It will have to incorporate an airbox, a split tube so that I can open the hood, and some form of sealer where the hood tube and throttle body tube meet.

I have been accused of being a "sick man" by my brother-in-law when I told him of my plans and mentioned how fun it would be to watch snowflakes get sucked into my scoops. All I can say is...so what.
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Old 01-03-2003, 03:20 PM   #17
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Damn. That'd be cool (no pun intended, Tim.). Mine will have to be more subltle than that. I don't feel like painting my hood yet! I'll take another look at this today, and start on my SC cover, as well. Stay tuned.
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Old 01-03-2003, 05:40 PM   #18
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willwren, have you got your intake yet?
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Old 01-03-2003, 09:20 PM   #19
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Nope, but it gets closer every day! The odds just getting better and better. Right Hector?

The intake and 2.25" pulley will probably get here about the same time.
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Old 01-03-2003, 10:19 PM   #20
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I can set you up with hood intakes easy and I already made blocks and the fumes are not that bad. Yes I will set up pictures of all the hood intake options with measurements and prices. It will take a bit because I am just getting busier and busier but I will have true new solutions and it will include instructions on doing it yourself. Blocks are way to easy to do so unless someone really needs me to I would suggest making your own.

Ty
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