How NOT to build a car from the ground up - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 10-04-2008, 01:32 AM   #21
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Checked out some info on Singh grooves. Haven't really heard any negatives about it. Has anyone found any empirical data on this?

"I've done several grooved heads, both NA and turbo applications. 2 Saturns were raised 1 point from 9.5 to 10.5:1, both running 87 octane, neither activating the knock sensor (checked with a scan gauge) even at 20 mph 1/2 throttle in 5th gear. Turbo applications seem to be good for about 4-5 psi extra boost on same fuel."
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Old 10-04-2008, 01:32 AM   #22
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yeah the grooves have merit....just not those. I love the video, idles great, backfires means it's faster.
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Old 10-04-2008, 01:41 AM   #23
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Quote:
Originally Posted by kenzo42 View Post
Checked out some info on Singh grooves. Haven't really heard any negatives about it. Has anyone found any empirical data on this?

"I've done several grooved heads, both NA and turbo applications. 2 Saturns were raised 1 point from 9.5 to 10.5:1, both running 87 octane, neither activating the knock sensor (checked with a scan gauge) even at 20 mph 1/2 throttle in 5th gear. Turbo applications seem to be good for about 4-5 psi extra boost on same fuel."
to be honest, i have only seen them done on small 2 stroke motors. and they are VERY popular in the gas r/c car world when you port the motors on them.
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Old 10-04-2008, 05:45 PM   #24
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This is proof that just because you have a shop full of all the right tools, doesn't mean you know how to use them.
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Old 10-04-2008, 11:14 PM   #25
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Oh my dear lord! I feel less intelligent having seen that.

What color is it anyway? Blue? Red? Gold? Silver? Bluish-gold? Reddish-silver? I can't tell.

I love the self balancing turbo,though! It just flings the excess weight off all by itself!
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Old 10-06-2008, 10:29 AM   #26
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Am I the only one that just got angrier and angrier the more i saw? I swear people like that just need to be homeless...with aids...and leprosy to rot away the hands that ruin peoples (idiots) cars and lives. I cannot belive that theres a group of people THAT stupid. And whats worse that the idiot who took his car there in the first place has taken it back there multiple times after multiple failures. Wow.

Last edited by leatherface24; 10-06-2008 at 10:30 AM. Reason: miss spelling is a bitch....
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Old 10-06-2008, 04:27 PM   #27
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I don't understand how you TIG that badly...

This was my FIRST EVER time TIG welding, and the bead on the right was after about 20 minutes of practice...

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Also look on PG 21 at the sick clutch replacement...
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Old 10-06-2008, 04:47 PM   #28
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Quote:
Originally Posted by leatherface24 View Post
Am I the only one that just got angrier and angrier the more i saw? I swear people like that just need to be homeless...with aids...and leprosy to rot away the hands that ruin peoples (idiots) cars and lives. I cannot belive that theres a group of people THAT stupid. And whats worse that the idiot who took his car there in the first place has taken it back there multiple times after multiple failures. Wow.
It pisses me off to see people do stuff like that to cool cars which aren't as readily available. When miatas start to become scarce, I'll buy a junker...just in case.
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Old 10-06-2008, 05:47 PM   #29
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dsm's are not very reliable in the first place. these guys just add to that rep
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Old 10-06-2008, 06:20 PM   #30
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Alright. After reading the Singh information, this is my understanding. The grooves or lines are created to expose more of the air fuel mix to the spark plug upon ignition and to help create turbulence in the quench area for better mix and burn. In theory, as the piston hits TDC, the fuel outside of the quench area is not directly exposed to the spark plug, meaning that it takes longer for the total amount of fuel to burn during ignition. With these Singh groves, you introduce the fuel outside of that quench area to the spark plug, without increasing the volume by much. This also allows mixing of the fuel and air during compression.

That's what I got in like 5 minutes of reading, so if I'm off base, then I'll have to read again. I'm gonna look into this more anyhow.
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Old 10-06-2008, 06:36 PM   #31
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Quote:
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dsm's are not very reliable in the first place. these guys just add to that rep
Stock they are pretty reliable. People run into problems because they're so easy to add power too. I added 100hp for $600. Now do you think any of that $600 went to a better clutch, upgrading my 120k mile hoses or gaskets, getting rid of my balance shafts or in any other way doing anything to help the car handle the added power? Of course not.

Look at the Miata though, probably one of the most reliable stock cars there is. But if you want to make over 250hp reliably you need a new rear end, new tranny and maybe a new bottom end.
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Old 10-06-2008, 06:54 PM   #32
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Page 21, clutch takes the cake!
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Old 10-06-2008, 08:37 PM   #33
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no way I would drive with that clutch hahaha
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Old 10-07-2008, 06:04 PM   #34
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lol at 0:55 in the video. The car backfires and then hear the goofy *** spainish guy laugh in his generic spainish laugh.
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Old 10-07-2008, 07:57 PM   #35
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I would bang an ugly chick on the hood of that car because it would probably make her look better!
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Old 10-07-2008, 08:04 PM   #36
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omg, that clutch,, omg


i can see it now

dyno test number 4

and boom, the clutch rockets out of the motor bay and chops the dudes head clean off
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Old 10-07-2008, 09:48 PM   #37
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i sure hope the tuner sees pictures of this build before agreeing to be in the same room as that car with it running.
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Old 10-07-2008, 10:51 PM   #38
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it was funny before but after seeing that clutch... someone is going to get hurt.
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