Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
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olderguy 08-07-2012 07:29 PM

Sort of funny that Pabst Blue Ribbon was the only well-known national beer that made the cut. One that has been derided and criticized by "true beer connoisseurs" that I have come across.

NA6C-Guy 08-07-2012 09:22 PM

I enjoy PBR for an easy to aquire, and cheap beer. Its not great, but for the price and the fact it gets you drunk... its good.

buffon01 08-07-2012 11:59 PM

Yay!! the forum in unbroken!

It's weird that I prefer alcohol, and cocktail as opposed to beer. I've tried beer and I just don't see why most people are so fond of it :dunno: :greddy2:

hustler 08-08-2012 12:00 AM

2 Attachment(s)
high compression, little turbo:
https://www.miataturbo.net/attachmen...ine=1344398436
low compression, bigger turbo:
https://www.miataturbo.net/attachmen...ine=1344398436

buffon01 08-08-2012 12:14 AM

Both built engines, right? How high was the compression on the first one and how small was the snail?

hustler 08-08-2012 12:30 AM


Originally Posted by buffon01 (Post 912697)
Both built engines, right? How high was the compression on the first one and how small was the snail?

10:1 w/ 2554 (stock engine) strictly 93 octane.

My car is 8.5:1 and built with a GT2860rs using the big housing. I run 91 octane on that table, in August, lol.

buffon01 08-08-2012 02:21 AM


Originally Posted by hustler (Post 912701)
10:1 w/ 2554 (stock engine) strictly 93 octane.

My car is 8.5:1 and built with a GT2860rs using the big housing. I run 91 octane on that table, in August, lol.

91 octane O_O and it didn't blow up. How much did Chuck Norris charged you for that motor?

Reverant 08-08-2012 03:05 AM


Originally Posted by hustler (Post 912688)

Were you det limited? I've tuned many 10:1 engines, and at 150kPa, the worst case scenario was 19* at 7000rpm.

sixshooter 08-08-2012 08:05 AM

I would LOVE to see dyno plots of both engines.

y8s 08-08-2012 11:13 AM

yes and also one for high comp big turbo. i hear that's win.

turotufas 08-08-2012 12:59 PM

On 93 octane my stock '99 loves the FM 1.6 spark table.

hustler 08-08-2012 01:28 PM


Originally Posted by Reverant (Post 912735)
Were you det limited? I've tuned many 10:1 engines, and at 150kPa, the worst case scenario was 19* at 7000rpm.

The verge of detonation on the sound of uneven flame propogation. It was also 103* that day with 122*f IATs. This is prior to me increasing the spark angle and working in 4* of retard with MAT-based spark retard. I want to add more spark when it cools off and see what happens.

Allen's base spark table had to be retarded from ~29-31 degrees at 101kpa down to 26-29* due to detonation. This was done during "destruction testing" where the pistons are really hot this reduced spark-angle required to hit MBT.

hustler 08-08-2012 01:30 PM


Originally Posted by y8s (Post 912810)
yes and also one for high comp big turbo. i hear that's win.

With or without E85?

hustler 08-08-2012 01:45 PM

2 Attachment(s)

Originally Posted by sixshooter (Post 912752)
I would LOVE to see dyno plots of both engines.

Ignore the AFR, it was a PLX:
https://www.miataturbo.net/attachmen...ine=1344447932
And mine on ultra-low boost at 9psi:
https://www.miataturbo.net/attachmen...ine=1344447932
I'll get a real dyno later this month on my car.

hustler 08-08-2012 01:53 PM


Originally Posted by buffon01 (Post 912728)
91 octane O_O and it didn't blow up. How much did Chuck Norris charged you for that motor?

$400 pistons
$400 rods
$300 valve springs
$250 valves (Thanks Y8s)
$1100 labor, seals, assembly

y8s 08-08-2012 03:30 PM


Originally Posted by hustler (Post 912867)
With or without E85?

honey, please. 93 from down the street.

Pen2_the_penguin 08-08-2012 07:04 PM

1100 dollars in labor? God damn...

dc2696 08-09-2012 04:05 AM


Originally Posted by y8s (Post 912810)
also one for high comp big turbo. i hear that's win.

I'll never build a low comp turbo motor again thats for sure.

Doppelgänger 08-09-2012 09:38 AM

It seems my neighbor thinks a green light overrides a yield sign when making a right and the yield sign is for the right lane. I was making a left through an intersection and he was making a right and had a yield sign. He honked at me and called me a dumbass (not knowing we were neighbors until we pulled in the subdivision). I let him pass me and followed him to his driveway and politely explained he was wrong because he had a yield sign. He tried to combat me with "but I had a green light and iI have a buddy who is a cop and I'll ask him" bullsh!t. Funny how people get mad when they can only blame themself for not paying attention to their surroundings. I did get some joy out of it by having a very condescending and snide attitude about telling him he was wrong...but only after he was adamant about being right for having a green light.

I'm highly contemplating printing off the O.C.G.A code about yield signs and leaving it in his mail box.

Braineack 08-09-2012 09:39 AM

haha. I understand his mindset, but yeah, right yeild sign means "yeilds to the traffic in the street." you can turn left on a green freely because you need to yeild to oncomming traffic, he then needs to yeild to you.

it's worse if there's no divider between the straight and turn lane with a right hand yeild.


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