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Welcome to the new site layout. This should give everyone the opportunity to comment, share ideas, and ask questions in all the articles. Please let me know how you like it!
Categories: General Tags:
Here is a 1:1 template that I made in order to redrill the cam gear.
This mod has been gaining a lot of popularity recently due to how cheap and effective it is. For me it felt like a 14 deg timing bump without actually advancing the timing. Basically what happens in the ExhIntake cam swap is the exhaust cam is installed on the intake side, then clocked accordingly. This mod is only available for NA and NB 1.8Ls due to the CAS being on the exhaust cam. In a nutshell, you obtain an exhaust cam from a 1.8L head (BP from a 1.8L Mazda Protege, 1.8L Mazda Miata, 1.8L Ford Escort GT), cut the CAS tangs off of the cam, redrill a stock cam gear to 197.5 deg off of in I tick mark (or use an adjustable one), and install. The cam specs from SoloMiata show the same amount of total lift, but the exhaust has a longer duration.
|
US Spec 1.8 BP
|
94-97 (Hydraulic Lifters)
|
99-00 (Solid Lifters)
|
|||
|---|---|---|---|---|---|
|
Duration @
|
Intake (BP05)
|
Exhaust (BP06)
|
Intake
|
Exhaust
|
|
|
.010”
|
218
|
232
|
257
|
278
|
|
|
.020”
|
208
|
220
|
224
|
232
|
|
|
.040”
|
195
|
208
|
209
|
215
|
|
|
.050”
|
190
|
202
|
204
|
210
|
|
|
.080”
|
176
|
190
|
190
|
196
|
|
|
.100”
|
167
|
180
|
181
|
187
|
|
|
.150”
|
145
|
158
|
158
|
164
|
|
|
.200”
|
119
|
134
|
132
|
141
|
|
|
.250”
|
89
|
108
|
102
|
114
|
|
|
.300”
|
43
|
70
|
59
|
79
|
|
|
Valve Timing
|
5 BTDC
|
56 BBDC
|
8 BTDC
|
53 BBDC
|
|
|
48 ABDC
|
14 ATDC
|
49 ABDC
|
9 ATDC
|
||
|
Overlap
|
19 (-5-14)
|
17 (-8-9)
|
|||
|
Base Circle Dia.
|
1.415”
|
1.415”
|
1.418”
|
1.418”
|
|
|
Total Lift
|
.338”
|
.338”
|
.326”
|
.350”
|
|
*Data taken from: http://members.aol.com/solomiata/cams.html
Categories: Power Mods Tags: BP, Cam specs, Cam swap, Exhintake
This is how it all starts, ’04 Suzuki GSXR600 throttle bodies bought off of eBay for 50$ in Nov ’05. I became infatuated with individual throttle bodies many months earlier after reading about them at the TWM and Jenvey websites. I came across the HomeMadeTurbo article where they took GSXR throttle bodies and put them on a Honda, then I thought to myself this would be a lot of fun putting together a kit of my own, then slapping it on my Miata. I’d get a lot of hands-on work, plus I’d learn a lot about engine management and tuning. And what better way to learn about engine management and tuning then to get a MegaSquirt
. I ended up going with the MS1 V2.2 board with Megasquirt N Spark Extra because it was the cheapest alternative while providing everything I needed from an EMS, and for 120$, you can’t go wrong! More details on the Megasquirt can be found on its own page. Let’s get on with the build!
Categories: Power Mods Tags: DIY, individual throttle bodies, irtbs, ITBs