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Old 09-03-2022, 12:56 PM   #201
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Did you change the cam timing at all?
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Old 09-03-2022, 02:57 PM   #202
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Did you change the cam timing at all?
nope this was a simple a-b test, both cams timed straight up. I did one pull after the first three where I played with ignition timing just a little bit, and driving the car around there's some more work to be done there. I don't think I need an adjustable timing gear, I'm not displeased with the powerband as it sits. I'll refine the tune and get fully fleshed out numbers later.
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Old 09-03-2022, 03:05 PM   #203
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The ipd cam wants to be 3-4 degrees behind straight up. Real tdc on it is at 1mm lift at crank TDC. Bet you pick up power everywhere that way rather than just shifting the powerband around.
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Old 09-03-2022, 03:26 PM   #204
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The ipd cam wants to be 3-4 degrees behind straight up. Real tdc on it is at 1mm lift at crank TDC. Bet you pick up power everywhere that way rather than just shifting the powerband around.
Does this apply to 8v applications as well? I have mine straight up right now dialed back from +1 I originally had set.
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Old 09-03-2022, 04:01 PM   #205
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Does this apply to 8v applications as well? I have mine straight up right now dialed back from +1 I originally had set.
This is specific to the IPD Turbo and Enem V15 cams.
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Old 09-03-2022, 04:51 PM   #206
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The ipd cam wants to be 3-4 degrees behind straight up. Real tdc on it is at 1mm lift at crank TDC. Bet you pick up power everywhere that way rather than just shifting the powerband around.
Seconded
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Old 09-03-2022, 06:11 PM   #207
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there's also the sudden desire to do an intercooler test and verify that the npr is all we believe it to be
Do it!
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Old 09-03-2022, 07:46 PM   #208
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IPD claims 15-25hp increase depending on mods but I figured the gains would be more substantial considering all you've done thus far. It's awesome to have this info and see how the HP progresses with the build!
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Old 09-05-2022, 01:13 AM   #209
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The ipd cam wants to be 3-4 degrees behind straight up. Real tdc on it is at 1mm lift at crank TDC. Bet you pick up power everywhere that way rather than just shifting the powerband around.
I have an ipd cam and sts gear....was unaware of the best way to advance/retard it
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Old 09-06-2022, 05:01 AM   #210
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I have an ipd cam and sts gear....was unaware of the best way to advance/retard it
Just to verify (because I literally just put my gear back to straight up) from advanced +1 degree... I should try retarding it 3 or 4 degrees instead?


I had it retarded-1, 2 degrees at one point (but with a pretty bad vac leak i was unaware of at the time) but I do prefer my top end with the 20t! ;) especially how strong she's running now! :D
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Old 09-06-2022, 10:20 AM   #211
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The ipd cam wants to be 3-4 degrees behind straight up. Real tdc on it is at 1mm lift at crank TDC. Bet you pick up power everywhere that way rather than just shifting the powerband around.
I am only really concerned with power from about 3700 to 6200. We stay there all day long. Getting from 5500 to 6000 seems an effort with the IPD cam straight up.
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Old 09-06-2022, 11:26 AM   #212
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I am only really concerned with power from about 3700 to 6200. We stay there all day long. Getting from 5500 to 6000 seems an effort with the IPD cam straight up.
6000 is not a place where a stock 8v head will make power, generally speaking.
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Old 09-06-2022, 11:56 AM   #213
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I don't know why they grind them so advanced from where they say it should be installed. Maybe it's a guideline as to how far they want you to mill the head?

Or they're getting paid off by Big Adjustable Cam Gear.
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Old 09-06-2022, 01:12 PM   #214
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Or it's a hold over from when it seemed every aftermarket cam was ground with 4° of adv built in...
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Old 09-06-2022, 01:59 PM   #215
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6000 is not a place where a stock 8v head will make power, generally speaking.
There are a lot of places on the tracks we race where it doesn't make sense to shift from 4th to 5th as you near the end of a straight. You just keep it in gear with the foot down until you brake or hit the limiter. *shrug*
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Old 09-06-2022, 05:55 PM   #216
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Or it's a hold over from when it seemed every aftermarket cam was ground with 4° of adv built in...
Because all the Dodge guys go straight to the bottom of the page.
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Old 09-06-2022, 06:06 PM   #217
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There are a lot of places on the tracks we race where it doesn't make sense to shift from 4th to 5th as you near the end of a straight. You just keep it in gear with the foot down until you brake or hit the limiter. *shrug*
Being able to spin it to avoid changing gears and making incremental power at those RPMs are totally different things.
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Old 09-07-2022, 09:29 PM   #218
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so I reckon the takeaway is I need to get an adjustable cam gear before I toss this 8v head aside?

fan motor ordered, along with spare hoses ahead of MM, did notice that the radiator was somewhat swollen when I had it out of the car, that's not quite desirable. no idea how long that's been like that, but I'ma keep an eye on it, and maybe toss a spare in for the trip. it doesn't leak or anything, but.. still, undesirable.

in checking what type of fan motor the car has, I discovered a lot of silver "residue" on the side of the motor, so I'm guessing it self-destructed.
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Old 09-07-2022, 10:21 PM   #219
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so I reckon the takeaway is I need to get an adjustable cam gear before I toss this 8v head aside?
yes please. maybe a small amount of amateurish porting after that?
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Old 09-07-2022, 11:09 PM   #220
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that was incorporated into this test by virtue of re-baselining the T cam
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Old 09-08-2022, 09:58 AM   #221
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so I reckon the takeaway is I need to get an adjustable cam gear before I toss this 8v head aside?
Please do.
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Old 09-08-2022, 10:35 PM   #222
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I guess I'm trying to grasp where to time an ipd cam with a big turbo that eats at mid to high range. Getting off the line is ok but I like to be able to pull when I'm going just like 60mph and wanna move....is an advance or retard better for a such thing?
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Old 09-09-2022, 03:38 PM   #223
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I guess I'm trying to grasp where to time an ipd cam with a big turbo that eats at mid to high range. Getting off the line is ok but I like to be able to pull when I'm going just like 60mph and wanna move....is an advance or retard better for a such thing?
What's mid to high range? Kenny's dyno test kinda highlights the rpm range that the IPD cam provides, with supporting mods. If that looks like what you're looking for, run it straight up. If you're looking for something significantly different than what's shown, changing your cam timing on this cam isn't going to do it.
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Old 09-09-2022, 04:09 PM   #224
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I'm willing to try things, but I'm going to put a pin in that until after mountain meet.
on another note, ordered some car audio stuff for the old girl. last year I threw some cheapie speakers and a head unit in it last minute, turns out one of the p.o.'s left me a present in the stereo wiring that causes it to randomly short out. the alpine head unit just cuts off the internal amp, the old head unit apparently blew its fuse. so I'm going to replace all of that trash, put some better speakers up front and drive all 4 door speakers from an amp instead of the head unit, and put my old alpine amp to work in the back with a rockford fosgate dvc 12".

also on the short list is the remainder of the interior re-installation (possibly before mm as well, depends on how next weekend lines up) with a new head liner, I think I'll just skip sleeping until maybe november with the amount of items on my plate now.
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Old 09-13-2022, 05:28 PM   #225
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pulled the v8 wagon into the shop to rob parts (the hitch, nothing else. boy she needs love this winter. lots of love). waiting on the first wave of the deluge of parts to be delivered, tonight will hopefully be stereo install and wiring correction (hopefully I say because I'd like to be finished tonight, but that may be a tall order. the heavy wiring is done though), should be back to driving it around tomorrow as well so I need to remember to grab the laptop before heading out on the daycare run in the am.

if I finish early on these projects, the c4 has a list a mile long, so I'll probably start picking up on that. The weather is coming up perfect, so that's nice as well. much excite
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