bolus

Hi guys, I've been lurking here for a while but I thought I would tap into your expertise. I would see what you guys would do to boost performance in the Ariel Atom's engine. Not that I really need it. The car is already scary fast and can spin the tires all the way up through the first part of third. But I thought it would be interesting to hear what you guys would do.

I have an Ariel Atom made in the US by Brammo Motorsports. The US version has the 2.0L supercharged GM ecotec engine. I have the 300hp model. The engine is running what I think is essentially a stage 3 kit. It has a 3" pulley and 60 lbs/hr injectors (I think) and upgraded valve springs (I think). It has a custom intake and custom exhaust and the tune is custom for the car done by Banks Power

The tune is running rich from what I hear from other owners and Brammo is working on an upgrade for us (Brammo has excellent after sales support). But there is probably room to improve there. There is discussion that the intake and exhaust could be larger to gain a little more performance. The exhaust is 2.25" though the car runs about 120db at full throttle (definite loud as hell) so it cant be that restrictive. There is no cat on the car.

Brammo customizes the intercooler endplate to allow more coolant flow (dual pass) though there is discussion amoung atom owners that the intercooler radiator could be a little larger. It is located on the front of the car pointed toward the ground.

So what crazy things would you do to pump up the performance? Is it even possible to get much passed 300bhp on the ecotec without major modification?

Thanks!





intercooler radiator


more pics: /

05REDROCKET

I hate you!!!
I want one!!!

Oh yeah Turbo the bitch!

SSdan

Hmmmm.. Try and get pics of the injectors and the pulley.

-Jayson-

hmm 300HP and only a 3.0 inch pulley and valve springs? How high does the engine rev? What size blower is it? Is it the same M62 we have?

Red2.4SS/SC

damn man that car is pure ******* sex , how much did you pay if you dont mind me asking , and how hard is it to get a hold of one of these

Mikey851

This is exactly what I was talking about. High rpm with limited boost.

Red2.4SS/SC

after looking at all your pics i can see how you have 300 bhp , the header on the ariel is like an aftermarket header for the cobalt , it actually looks like the one JBP was gonna design they just couldnt get it to fit , i bet you have a bunch of stuff that is different than our cars , looks sweet , if your running a 3.0 pulley and bigger injectors , plus that header i can already believe your at around 240-250 at the wheels which is around 265-280 BHP



theres one of the reasons you have more power than a stock ss/sc

discofreak

wooow. i wouldn't mind one of those. definately an easy way to bump up power would be to lean the tune out, (duh), and swap for a smaller pulley. i'm wondering how you've pulled 300bhp out of a 3"...what's the redline at? timing? these motors LOVE timing, you cna always bump that up a few degrees. slap a 2.7" pulley on there, maybe a little more timing, leaner tune - you'd be the fastest atom out there!

...not that you'd need to be any faster. you might make me look bad

NJBLUESS

What's the compression ratio?, 10:1 and 8k redline will put you at 300hp.

pimpnwink

iTrader: (1)

umm yea drop the supercharger get pistons and turbo that machine. lol

Maxim_X

A dual pass inter cooler plate, from GM, or from one of the vendors would def work in you application.

Many of us use the heat exchanger from a supercharged cobra in addition to our stock one to reduce heat soak.

I don't know if you would be able to mount it as easily as we do though. You may look into a second one that you have and stack it on top of the first one to get added cooling if possible.

SSdan

That header is sex.

FryLoch

iTrader: (5)

OMFG!!! I think I just Had a heart attack!!! That is AFUCKINGMAZING!!!! I'll trade ya.

bolus

Thanks for the replys so far.

Lets see.... Rev limiter at 6800, same m62 supercharger as you guys have. I dont know all what Brammo did to the engine but I dont believe it has that many other customization. In fact several owners have been dynoing a little low (20hp or so below stated) so that is one reason I'm seeing what you guys think. I haven't dyno'd my car yet.

here is a pic of the pulley:


$50K to $100K based on options (especially on how much carbon fiber you include). 6 month build waiting time. Street legal in most states. I'm registered and insured in Oregon. Fast as hell, like scary fast.

SSdan

Hmm...Also look at the belt, it is routed way differently than ours and isn't ribbed on both sides. Maybe cause it doesn't have A/C?

nramlow2006

im speechless... i want one... bastard......

lol sweet ride.. bump for info..

Mikey851

Ariel Atom US


Initial Engine Options and Estimated Prices
Est. MSRP w/ minimal options All prices are not final nor are HP numbers.
GM Engines HP figures will likely increase by at least 5-10%
Brammo Ecotec 2.2 $35,000 145 HP/ 155 Ft./lbs.
Brammo Ecotec 2.4 $38,000 171 HP/ 163 Ft./lbs.
Brammo Ecotec 2.0 Supercharged $40,000 171 HP/ 163 Ft./lbs.
Honda K20 (k20z3 Not advertised however likely) $40,250 USDM K20z3 200-225HP
Honda K20 Supercharged $45,750 (K20z3) 290-300HP

The above is unmodified. They come with the stock 2.0 SC engine as far as specs go (I know they modified it to fit in the Ariel). It looks as though he may have some high compression pistions in there because his redline is not awfully high, and his pulley is 3".

bolus

Definitely no A/C... well except mother nature

NTSR_SS

niiiiiiiiiiiiice ride... two thumbs up for sure... just find someone in your area with hptuners to fix your tune... that header is dead sexy!!!!