I put a lightwieght flywheel and new clutch on my car and it's slower?????? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-31-2009, 11:31 AM   #21
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Originally Posted by NA6C-Guy View Post
Well of course, but I meant people in the ~200whp range. I was thinking more like 14 flat-ish.
Actually, if my powerband wasn't so screwed up, I probably would've been in the 14second flat area. All my power is created below 4500rpm, so I have a great launch and a 1.9 60 time, but once I'm out of first gear and every gear shift coming just out of my main power band, I'm actually playing in much less HP.
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Old 08-31-2009, 12:31 PM   #22
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sounds like boost is dropping off faster between shifts because of the lightweight flywheel

now is time for you to learn to flat shift
XP
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Old 09-01-2009, 07:59 AM   #23
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Originally Posted by rharris19 View Post
What if the clutch disc was installed backwards? I know it would be very hard to do as there is a definate outer and inner but it is possible. The disc could be slipping.

How did you do the swap? Did you pull just the transmission off and nothing else?
Won't go into gear. Ask me how I know. That was 5 years ago when I did that boneheaded move.

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Old 09-01-2009, 08:45 AM   #24
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Originally Posted by dustinb View Post
Yes because a 14 second 1/4 mile is sooooo slow...
In the world outside of Miata's it kind of is... I ran in the 14's with my pretty much stock '95 Prelude on **** tires and probably 3300lbs with driver and maybe 165-170hp to the front wheels. I guess it was the VEETACK!!!
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Old 09-01-2009, 11:00 AM   #25
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I'm having trouble believing that 200rwhp in a miata would only run 14s. My car on 7psi and a shitty tune was basically even with a 350z and they can run mid 13s. Turbo lag can't be the loss of a full second. Open diff I could belive tho. Or am I missing something when it comes to miata drag racing?
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Old 09-01-2009, 02:52 PM   #26
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Originally Posted by flier129 View Post
I'm having trouble believing that 200rwhp in a miata would only run 14s. My car on 7psi and a shitty tune was basically even with a 350z and they can run mid 13s. Turbo lag can't be the loss of a full second. Open diff I could belive tho. Or am I missing something when it comes to miata drag racing?
Basically huh?? Some people might think 2-3 car lengths is "basically even". It takes a very good driver to get a stock 350Z into the 13's, most run mid-high 14's.
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Old 09-01-2009, 02:56 PM   #27
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Quote:
Originally Posted by zoomin View Post
Basically huh?? Some people might think 2-3 car lengths is "basically even". It takes a very good driver to get a stock 350Z into the 13's, most run mid-high 14's.
I pulled a car on him by 110 :-\. The Z has test pipes and 4:08 gears and its an 06.


And yeah I figure driver has a lot to do with it. Reaction time and a good 60?
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Old 09-01-2009, 03:04 PM   #28
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F***, just post the two time slips and analyse that ****.
Is it launch, traction, topend, etc.
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Old 09-01-2009, 03:13 PM   #29
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Quote:
Originally Posted by flier129 View Post
I pulled a car on him by 110 :-\. The Z has test pipes and 4:08 gears and its an 06.


And yeah I figure driver has a lot to do with it. Reaction time and a good 60?
from a stop or a roll? And the Z has far better top end than a Miata.
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Old 09-01-2009, 03:48 PM   #30
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from a roll lol, I'll stop posting since I know nothing about drag racing. Just disappointed 200rwhp in a miata isn't faster than 14's is all :-\
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Old 09-01-2009, 04:07 PM   #31
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Originally Posted by Spookyfish View Post
F***, just post the two time slips and analyse that ****.
Is it launch, traction, topend, etc.
Don't you know that baseless speculation is much more scientific?
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Old 09-01-2009, 07:02 PM   #32
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from a roll lol, I'll stop posting since I know nothing about drag racing. Just disappointed 200rwhp in a miata isn't faster than 14's is all :-\
I thought so....
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Old 09-02-2009, 09:35 AM   #33
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220whp here and 12.9s @ 110 mph.
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Old 10-17-2009, 11:14 PM   #34
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The mass of the flywheel stores energy. A heavier flywheel stores more than a lighter. If you were relying on a high RPM launch to get the car moving then the lighter flywheel will make you slower.
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Old 10-17-2009, 11:25 PM   #35
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needz two stepz
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Old 10-18-2009, 12:51 PM   #36
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Quote:
Originally Posted by dohcpanther View Post
the mass of the flywheel stores energy. A heavier flywheel stores more than a lighter. If you were relying on a high rpm launch to get the car moving then the lighter flywheel will make you slower.
+1
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Old 10-18-2009, 01:14 PM   #37
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200 rwhp should but you in the 13's. If not, you suck at driving.
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Old 10-18-2009, 01:54 PM   #38
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Lightweight flywheels require incredible skill to launch correctly. I used to bracket race a ford focus, and I was very accurate the first year stock. The second year it was a real challenge because I'd installed a lightweight flywheel. I could do it, but it took me half a season to get my times back down to the stock flywheel numbers.
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Old 10-21-2009, 01:24 AM   #39
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Was the track temps colder? Mabe less traction. That and the first weekend out with a new clutch and flywheel setup..Did you look at the reaction times?

I actually thought 14.8 was good for 6psi. Get a wideband and up the injector size. Go for more boost.

Even with MS and 440-550cc injectors...
You'll find after 10psi, if running street tires, you'll pull the same 1/8th mile. Even if you keep bumping boost. You just spin spin and roast in first and second. They are useless.


God luck
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Old 11-04-2009, 11:46 PM   #40
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I just installed my intercooler and its alot faster I think I might have had a vaccum leak in the stock pipes. I am taking it to the track next friday and I'll post my new numbers. Thanks for the help
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