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Author Topic: Buzz's Engine Makeover  (Read 20290 times)

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TopNotch

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Re: Buzz's Engine Makeover
« Reply #15 on: August 24, 2017, 07:55:14 am »
Yes they (Accelerated Motion) sent me the specs for my cam. They make a number of different grinds for dukes, depending on what you want to do, so there's only a chance of yours being like mine (assuming it's from them).
I took my balancer apart, saw that it looked fine, and just cleaned it and put it back together, and back in the engine. As you know, it's also the oil pump, and my oil pressure is very good.
BTW, you're supposed to fill the oil pump cavities with Vaseline on one of these when you install it, if it's dry (new or re-assembled).
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Raydar

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Re: Buzz's Engine Makeover
« Reply #16 on: August 24, 2017, 11:02:24 am »
I'm not sure where the regrind came from, but it's only a little more lift and duration than stock.
Can you share your specs?
(This engine is on Pennocks. I don't know anything more about than what is in the ad.)

Edit - here's the cam specs...
https://www.flickr.com/photos/30128663@N06/35277270573/
« Last Edit: August 24, 2017, 11:05:59 am by Raydar »
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TopNotch

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Re: Buzz's Engine Makeover
« Reply #17 on: August 24, 2017, 01:54:53 pm »
Click here to see my cam specs.
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Raydar

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Re: Buzz's Engine Makeover
« Reply #18 on: August 24, 2017, 02:05:06 pm »
Quote from: TopNotch on August 24, 2017, 01:54:53 pm
Click here to see my cam specs.

Thank you very much!
Did you retain the roller lifters? Or did you have to go with flat hydraulics?
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TopNotch

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Re: Buzz's Engine Makeover
« Reply #19 on: August 24, 2017, 02:11:23 pm »
Roller lifters. Got new ones with the cam.

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TopNotch

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Re: Buzz's Engine Makeover
« Reply #20 on: August 24, 2017, 02:22:06 pm »
I should add that my rocker ratio is 1.72, not 1.75 like the spec says. That's because I have aftermarket roller rockers, not stock rockers. So my valve lift is actually a tiny bit less than the spec sheet. Probably not enough to make any difference.
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Raydar

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Re: Buzz's Engine Makeover
« Reply #21 on: August 24, 2017, 02:55:32 pm »
Ok. Very good. Thanks again!
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GTRS Fiero

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Re: Buzz's Engine Makeover
« Reply #22 on: October 08, 2017, 09:39:36 am »
Quote from: TopNotch on September 15, 2011, 09:03:45 pm


I'm glad we don't archive threads on GFC.

Does the EGR being under the air filter put a lot of heat there?  I don't see an EGR tube.
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Raydar

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Re: Buzz's Engine Makeover
« Reply #23 on: October 08, 2017, 10:56:57 am »
The Duke EGR is plumbed directly into the intake manifold, just like most Chevy V8s.
I'm sure the heat introduced into the air filter housing is inconsequential, compared to the heat (exhaust) piped directly into the manifold.
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GTRS Fiero

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Re: Buzz's Engine Makeover
« Reply #24 on: October 08, 2017, 12:22:11 pm »
Discoloration on the underside of the air filter?
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TopNotch

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Re: Buzz's Engine Makeover
« Reply #25 on: October 08, 2017, 12:44:35 pm »
There haven't been any noticeable affects from heat from the EGR on the air filter housing or anywhere else.
 
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GTRS Fiero

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Re: Buzz's Engine Makeover
« Reply #26 on: August 18, 2018, 10:04:05 am »
Having followed this Fiero for a bit, I have to wonder how much more power it has.  How does it compare to a stock V6?
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TopNotch

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Re: Buzz's Engine Makeover
« Reply #27 on: August 18, 2018, 03:44:20 pm »
It was actually suffering a little bit at the 35th. Turns out I had stuck sliders on one rear caliper. (I wondered why there was so much break dust on that wheel when I cleaned for the car show.) When I pressed the brake, the caliper would slide enough to pull the outer pad to the rotor, but when I released the brake, the pad would stay snug against the rotor.
All fixed now, and the car actually feels like it has a tad more power.
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GTRS Fiero

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Re: Buzz's Engine Makeover
« Reply #28 on: August 18, 2018, 03:47:43 pm »
I'm sure getting the brakes to release helps, but how does it compare, power-wise, to your silver V6?
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TopNotch

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Re: Buzz's Engine Makeover
« Reply #29 on: August 18, 2018, 03:55:57 pm »
The duke is weaker, especially at the low end. The cam I put in does nothing for low end torque. But when I wind it out, it's pretty close.
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