Miata Mailing List: November 1997, Message #67
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From: 	Tony Cooper <tonyc07@ibm.net>

Subject: Sebring Timing   (was Re: Aw: MCA Mag Dyno Database)

Date: 	Sat, 1 Nov 1997 17:24:14 +0000



Nico van Steen wrote:

> 

>  Tony,

> 

> Have you ever taken a look at plug no.4? Does it still look ok.



Haven't looked but will





> I had been running a Sebring car at 17 degrees ...

......

......

> Personnally I would be afraid about using such high boost levels without an

> intercooler. The engine realy gets very hot with a Sebring.



Sebring recommends timing @ 8 with 93 octane, 6 @ 92 octane or less.



If I use an MSD unit which retards timing by 6 degrees under boost

conditions I should able to go to 14 BDTC and still maintain Sebring

specs.  I'm currently running at 12 BDTC (6 under boost).  Do you think

I'm in trouble here? 

 

> About the bypass system. The actuator has a stock setting.  On the actuator

> there is a silver coloured rod that can move up and down. The actuator lever

> stops when the small plate that is attached to it hits a screw. See if you

> can gain or lose boost by adjusting it. You have to have a 90 degrees wrench

> to adjust the bolt.



I'm not looking to increase overall boost, just to increase the boost to

the maximum the SC can generate a given RPM point instead of vacuum

point.



I think this alone will increase performance without additional risk of

damage.



Tony