To scoop or not to scoop?

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Re: To scoop or not to scoop?

Post by mi60o0 »

New Duke wrote:
Wed Mar 06, 2019 12:58 am
V8 Power wrote:
Tue Mar 05, 2019 9:30 pm
I wonder if you could put your own drainage in if not there?
You totally could. Just buying the cheap one and drilling a couple of carefully located holes through the FRP would be a budget solution.
Keke wrote:
Tue Mar 05, 2019 9:54 pm
I'm sure someone will correct me, but is the actual draw from the air box so strong it would pull rain in? I'd assume it would hit the back and drain back out ,
Probably at track and motorway speeds in wet conditions where momentum is pushing the air through the scoop in addition to the 'suck'. The inside of the RB scoop is laminated and slick too... unless the inside arrives scratched to hell like mine was. You'll have seen how rainwater glides up and over bodywork at high speed. Add suction to that effect. You can hear the scoop making a 'whoosh' noise. It's hilarious and makes the car sound like a vacuum cleaner. Definitely don't buy a scoop for the sound.

I've put a gap between my scoop and air box to act as an extra rain gutter. Means that I lose/disturb some air but I was nervous about water ingress (particularly as I drive it in all weather) and was curious whether it would hamper performance much. I'm data logging to see if the modification makes a notable difference and have a few more things to experiment with.
Keep us up to date I bought second hand rb intake and scoop from Luke murdoch and I. Bought brand new filter from Clive idle is stable like oem I reused the screen mesh I can't say if is any more power duee can't feel it.
The only time I notice difference after addint something was the cataclean
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Re: To scoop or not to scoop?

Post by Keke »

So duke, do you have the genuine racing beats scoop or the copy that I'm looking at?
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Re: To scoop or not to scoop?

Post by SeriousSam »

I've got an RB scoop on mine, can't remember whether I added any extra drain holes but I do know the car gets driven in all weather, and generally at speed on the motorway. I've never had any issue with water ingress, and remember that the scoop opening sits behind and below the car's bodywork. If there's enough rain falling, and you're going fast enough to pull a significant amount of it in through your intake scoop, you should probably back off to avoid aquaplaning and crashing ;)
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Re: To scoop or not to scoop?

Post by Eddie_r32 »

I just ordered one, will see what it's like on Friday!
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Re: To scoop or not to scoop?

Post by Conan »

There was an incident where someone went through a large puddle with there RX-8 and completely flooded the engine internals to the point of hydro lock.
Even towing it backwards and forwards failed to get it turning and I believe he sold it as it was, still locked up.
This is an incredibly rare event and was due to flooding around the country at the time.
It’s just an example of the RX-8 air intake set up.
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Re: To scoop or not to scoop?

Post by warpc0il »

Wasn't that with an AEM?

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Re: To scoop or not to scoop?

Post by Conan »

I can’t remember, it was a long time ago, possibly 2011- 2012
Just a one in a million incident, we both commented on the thread.
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Re: To scoop or not to scoop?

Post by PaulAV »

Believe a guy called dain collier on Facebook group achieved the hydro lock (killed his engine) but this was with a AEM this was driving through a flooded section of road not rain ingress directly, would of thought the amount of air being drawn into a rotary at full chat would negate the relatively small amount of rain going in, some water ingestion would potentially be more benificial (although not massive amounts)
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Re: To scoop or not to scoop?

Post by 13Black »

Dain doesn't come across as the brightest spark plug so that doesn't surprise me.
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Re: To scoop or not to scoop?

Post by New Duke »

Keke wrote:
Wed Mar 06, 2019 10:18 am
So duke, do you have the genuine racing beats scoop or the copy that I'm looking at?
I have the genuine Racing Beat one. Haven't had it on long. So am still experimenting with it.
PaulAV wrote:
Wed Mar 06, 2019 4:44 pm
Believe a guy called dain collier on Facebook group achieved the hydro lock (killed his engine) but this was with a AEM this was driving through a flooded section of road not rain ingress directly, would of thought the amount of air being drawn into a rotary at full chat would negate the relatively small amount of rain going in, some water ingestion would potentially be more benificial (although not massive amounts)
Yeah I remember that. Poor chap. I can't comment on the AEM personally but when I mentioned wet conditions above I meant including lightly flooded roads (sometimes there is no alternative route) and sustained/heavy splash from other vehicles. Not just rain drops. I'm sure it's super unlikely with the RB scoop or we'd have seen complaints about it, but the inside of it is perfect for transporting water into the intake. It's hard to describe unless you take a look and stick your hand in there. I'm just being ultra cautious with it at the moment to avoid being 'that guy' with bad luck.
SeriousSam wrote:
Wed Mar 06, 2019 11:26 am
If there's enough rain falling, and you're going fast enough to pull a significant amount of it in through your intake scoop, you should probably back off to avoid aquaplaning and crashing ;)
Back off on a wet track? NEVER! ;) :race:
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Re: To scoop or not to scoop?

Post by Conan »

Ooh Mr Black you are awfull :)
You may be to young to rember the comedian ;)
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Re: To scoop or not to scoop?

Post by V8 Power »

There was a young man from Guardaloop
Who wanted a RB scoop
He listened to advice and bought one at half price
But it turned out to be a load of poop
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Re: To scoop or not to scoop?

Post by warpc0il »

I'm trying to visualise mine as I *think* the water trap shelf catches the water on the way up and diverts it out the back, rather than on the way down.

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Re: To scoop or not to scoop?

Post by New Duke »

warpc0il wrote:
Wed Mar 06, 2019 5:26 pm
I'm trying to visualise mine as I *think* the water trap shelf catches the water on the way up and diverts it out the back, rather than on the way down.
I must have missed that. I couldn't see any exits out the back (other than up the top where it joins the air box). The only 3 openings left that I noticed after installation were:

- The large bottom opening (hehehe) or mouth
- The large exit at the top that joins to the air box
- A single screw hole halfway up on the left hand side next to the other two that bolt the bracket to the bonnet release.

Really badly shown below.
Revi Ram_LI.jpg
Wish I'd taken photos of the back and not just the front. If there is another opening at the back (prior to the top exit), or anywhere, that would solve my concerns. :thumleft:
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Re: To scoop or not to scoop?

Post by warpc0il »

There's a row of holes across the full width at the back underneath the water trap shelf.

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Re: To scoop or not to scoop?

Post by New Duke »

Thanks Dave. Really good to know. Now I'll feel comfortable connecting it directly to the intake monstrosity I've bodged.
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Re: To scoop or not to scoop?

Post by Keke »

Eddie_r32 wrote:
Wed Mar 06, 2019 2:32 pm
I just ordered one, will see what it's like on Friday!
You beat me to it as "Guinea pig"!
Look forward to lots of pictures
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Re: To scoop or not to scoop?

Post by Eddie_r32 »

It's arrived less than 24 hours from ordering. It looks ok, up to the job it's required to do, does not feels tougher than fiberglass, some of the finish is not great and obviously no hardware, will have a go at fitting this weekend, if all lines up well then it's well worth 100 quid

It needs holes drilling out on the rear shelf.
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Re: To scoop or not to scoop?

Post by warpc0il »

It looks like they've taken a genuine RB scoop and used it to create a mould, from which they've then produced fibreglass copies.

The original RB scoop is injection moulded in ABS.

Has it got the water drain holes along the back?
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Re: To scoop or not to scoop?

Post by Eddie_r32 »

Did you read my post Dave? :p. No holes, but I think im capable of drilling some, also it's not really fiberglass, it's tougher than that.
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Re: To scoop or not to scoop?

Post by warpc0il »

I missed that line in your post. :oops:

I can't find any pictures of the back of the genuine RB scoop but IIRC the holes are about 4-5mm, in a line along what would be the back corner, from the inside.
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Re: To scoop or not to scoop?

Post by warpc0il »

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Re: To scoop or not to scoop?

Post by Dr. FrankenRex »

I shall mainly put pictures of my genuine RB scoop up when I take the bumper off at the weekend for all you lovely money savers :thumleft:
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Re: To scoop or not to scoop?

Post by Keke »

Good work everyone,
So it sounds like there IS a drainage shelf. But the holes need to be drilled,?
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Re: To scoop or not to scoop?

Post by warpc0il »

It looks like the outside surface of the clone is a replica of the original, so that would include the drainage shelf/trap, only without the holes that actually make it work. This isn't a dealbreaker but it does show that the maker/seller has no idea how it's meant to work and it just making money on someone else's design.

The inner surface doesn't look nearly as smooth, which probably doesn't make that much difference to the airflow.

However, the rain trap was designed to work with a constant wall material thickness, whether the inside shape is close enough might be critical in that area.

I hope that the material is tough enough and it won't crack or delaminate but then there's still the filter element before any bits could get in the engine.
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