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The Terminator
Engine/Tuning
Degreeing my cams - input please!
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<blockquote data-quote="olympic" data-source="post: 16086005" data-attributes="member: 168598"><p>Thanks for the input! I bought the car with the cams already installed so it's always been this way for me. The tune it came with was terrible so I had it redone by VMP which made a big improvement but it still has a ways to go. I read an old post over on modularfords.com that said Crower cams are known for having excessive runout on the base circle which keeps the valves from fully seating and can cause high IAT's, low intake vacuum, etc so I'm ordering the necessary tools to check that. If the cams check out I'll degree them to Crowers specs (110/118) and then work with a tuner to solve the issues. If the cams are bad I'm putting something much more mild in it.</p><p></p><p>[USER=68944]@tt335ci03cobra[/USER] the specs are:</p><p></p><p>T56 Magnum, stock ratios. Shifts like a dream!</p><p>Mcleod RXT</p><p>Mcleod alumunum flywheel</p><p>9.1:1 compression</p><p>Teksid block bored 0.020"</p><p>2.3L gen 1 whipple @ 19psi. Upgrading to a 2.9L gen 3 this winter.</p><p>91 Octane w/ methanol injection and Boostane</p><p>stock computer, SCT tuner, tuned by VMP.</p><p>stock Cobra heads with upgraded valve springs.</p><p>BBK intake with SCT BA2600 MAF.</p><p>Killer Chiller</p><p>Stock coils with NGK TR7IX Iridium gapped to 0.026.</p><p></p><p>Cam specs: <a href="https://www.crower.com/camshafts/ford-4-6-5-4-4-valve-modular-camshaft-1999-up-set-4-4763.html" target="_blank">Ford Modular Camshafts - Camshafts</a></p><p></p><p>The high IAT's are the biggest concern/problem. When I drive in the city at low speeds (30mph and less) the IAT2 just keeps slowly climbing past 160f and the car begins to really run poorly and I have to take it out on the highway to cool off. Even crusing on the highway in cold weather barely above freezing, Killer Chiller running with 35f intercooler fluid I'll have 90f IAT2s so something just doesnt seem right.</p><p></p><p>The second biggest issue is stumbling/bogging when tipping into the throttle below 2500RPM. If I blip the gas pedal at idle in neutral the engine just stumbles. When I tip in to the throttle a little too much below 2500RPM it will stumble and bog. AFR's go to full lean during these events so it's likely caused by the blower bypass valve closing too soon or it's a tuning issue, maybe both.</p></blockquote><p></p>
[QUOTE="olympic, post: 16086005, member: 168598"] Thanks for the input! I bought the car with the cams already installed so it's always been this way for me. The tune it came with was terrible so I had it redone by VMP which made a big improvement but it still has a ways to go. I read an old post over on modularfords.com that said Crower cams are known for having excessive runout on the base circle which keeps the valves from fully seating and can cause high IAT's, low intake vacuum, etc so I'm ordering the necessary tools to check that. If the cams check out I'll degree them to Crowers specs (110/118) and then work with a tuner to solve the issues. If the cams are bad I'm putting something much more mild in it. [USER=68944]@tt335ci03cobra[/USER] the specs are: T56 Magnum, stock ratios. Shifts like a dream! Mcleod RXT Mcleod alumunum flywheel 9.1:1 compression Teksid block bored 0.020" 2.3L gen 1 whipple @ 19psi. Upgrading to a 2.9L gen 3 this winter. 91 Octane w/ methanol injection and Boostane stock computer, SCT tuner, tuned by VMP. stock Cobra heads with upgraded valve springs. BBK intake with SCT BA2600 MAF. Killer Chiller Stock coils with NGK TR7IX Iridium gapped to 0.026. Cam specs: [URL='https://www.crower.com/camshafts/ford-4-6-5-4-4-valve-modular-camshaft-1999-up-set-4-4763.html']Ford Modular Camshafts - Camshafts[/URL] The high IAT's are the biggest concern/problem. When I drive in the city at low speeds (30mph and less) the IAT2 just keeps slowly climbing past 160f and the car begins to really run poorly and I have to take it out on the highway to cool off. Even crusing on the highway in cold weather barely above freezing, Killer Chiller running with 35f intercooler fluid I'll have 90f IAT2s so something just doesnt seem right. The second biggest issue is stumbling/bogging when tipping into the throttle below 2500RPM. If I blip the gas pedal at idle in neutral the engine just stumbles. When I tip in to the throttle a little too much below 2500RPM it will stumble and bog. AFR's go to full lean during these events so it's likely caused by the blower bypass valve closing too soon or it's a tuning issue, maybe both. [/QUOTE]
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Degreeing my cams - input please!
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