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| Project 3400 Roller Cam Block (Page 78/79) |
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jdv
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MAR 20, 08:11 PM
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lou_dias
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MAR 20, 10:17 PM
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@jdv
Cool thanks. I'll have to find that video that explains how to convert the older .ads file to Tuner Pro v5 .adx format...
re: oil pressure gauge issue ended up being a bad sending unit[This message has been edited by lou_dias (edited 03-20-2024).]
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jdv
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MAR 21, 10:28 AM
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lou_dias
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MAR 21, 05:27 PM
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I'll never be boosting this motor. Once it blows up, I will probably do another 3.5 build but make it a street engine again. (Lower compression, traditional valve train)...and make it a daily driver.
I have a Series 3 3800 NA sitting on a palette for 8 years that needs a rebuild and will replace my 4.9...
...and i have a series 2 3800 SC sled-o-matic that needs a rebuild that I want to convert to a 5 speed.
I really need to sell one or two of them at some point.
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lou_dias
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APR 09, 08:17 AM
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Still working thru issues. Right now major ignition problems.
This is still on pump gas. 93 octane with some octane booster.[This message has been edited by lou_dias (edited 04-09-2024).]
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jdv
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APR 11, 08:53 AM
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What type of ignition sat up are you running? DIS or distributor ? What code mack in the ecm?
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lou_dias
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APR 11, 10:55 AM
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DIS
NA$T1 for the Beretta 3.1 5speed as a base.
Upgrading from UR5's to UR6's. Closing the gap on the 5's got rid of the lower rpm issues but still going crazy > 5000rpm...[This message has been edited by lou_dias (edited 04-11-2024).]
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lou_dias
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APR 16, 09:22 AM
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New plugs are installed. New Taylor wire-set should arrive today. However I found another issue. The rocket-scientists who installed my motor welded in a 2.25" exhaust just before the muffler area. So I have an exhaust restriction over my previous build as well. This will be resolved eventually...
I suppose it's comforting to know I'm making 30 more rwhp despite these issues... Air/fuel is still not ideal (too rich), current hp peak is at 5320 rpm but that's with bad ignition, rich fuel and a restricted exhaust. Also we haven't done any timing changes.
I still need to measure the crank pulley to make sure the Rodney underdrive pulley is being used but my eyeball-measuring tool doesn't think so. Eventually, I'll retune it for E85 which will give me another 7% gain. If I can hit 235rwhp before E85, I should be able to get to > 250 rwhp from this build...still with heavier-than-stock racing wheels on....[This message has been edited by lou_dias (edited 04-16-2024).]
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lou_dias
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MAY 11, 10:41 AM
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With new plugs and wires installed I changed to heavy 56lb 13x10 wheels with 315mm width rubber.
We did a baseline run, no changes since last dyno of ~207 rwhp at 5300 rpm (we cut it off after that due to ignition issues.
Well, my power went down to 193.7 rwho at 6000 rpm. So just switching to wheels that were roughly 9-10 lbs heavier and I lost 13 rwhp and 11 ft*lbs...
The difference may even be greater since I didn't get to rev much past 5500 before.
With some tuning, since the ignition issue was gone now with the new plugs and wires, I ended up tuning back up to 203rwhp at 6200 rpm. I'm exploring new wheel options...
I've been telling people for years that my dynos were gimped because of my wheels but now I have some concrete proof. This is still with 93 octane with some octane booster.
I'll try to get a pic of the dyno run soon...
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La fiera
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MAY 12, 12:06 AM
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So by comparing your last dyno on this tread, you roughly picked up about 93WHP and 73WTQ at 6200rpms and without a turbo!!!!!!!!!!! That is a 3900 stock killer!!
You've proved my point again. With a cam upgrade to match your custom intake (believing the cam designer knows what is best for these iron heads), your off the shelf headers, and the tuning you were able to shadow a stock 3900 on peak power is amazing!! As you can see on this video these Canadian boys were very disappointed at their hard work thinking their 3900 was a force to be reconned but only to be outpowered by a 2st gen iron headed 60* V6. The guy that looks like "Elmo" in this video built a 3900 Camaro that ran low 9's but with a massive turbo. So the moral of he story is that everyone who fails to accomplish his/her goal because of their lack of knowledge goes the easier way out, turbo. Again, head flow numbers are mean nothing.
https://youtu.be/vdTY9J9crQw?si=r06WcNXOAKRitIag
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