AR 383 Arrived Yesterday!
Thread Starter
Burning Brakes
Joined: Jul 2000
Posts: 1,162
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From: Beaverton, OR
Re: AR 383 Arrived Yesterday! (tshort)
Dath - I had Mark include a 400 flywheel. In fact, I'm wondering if it's the flywheel that's causing my vibration problems right now. It vibrates/shakes even in neutral around 1200-3300 rpms. Mark thinks it could either be the poly motor mounts just transfering the vibration straight to the frame or that I installed the flywheel on wrong. I can't imagine I installed it wrong, it looked like it could only go on one way.
As for the balancer and pulleys: I bought another water pump from a speed shop in town and the pulley mounting wheel was a little further in (which helped) so I left it at that. It's hard to tell but they are still off a little but not very much.....heck, I wonder if that could cause vibrations???? I'm running one pulley around water pump, crank, and alt. and the other between crank and water pump.
MJ & Others: Yep, it's going to be lots of fun! I need to get that bag off and drop her in. Only problem is that I *INTEND* to clean up the engine compartment and a few other things before hand, but I'm so excited I don't want to wait!
[Modified by dath, 6:30 AM 7/11/2003]
Tech Contributor
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From: At my Bar drinking and wrenching in Lafayette Colorado
Re: AR 383 Arrived Yesterday! (dath)
Sure hope you have better luck with your AR engine than the one that's sitting shelled out in my driveway right now...
Drifting
Joined: Jun 2001
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Re: AR 383 Arrived Yesterday! (lars)
Sure hope you have better luck with your AR engine than the one that's sitting shelled out in my driveway right now...
[Modified by Tominator, 10:14 AM 7/11/2003]
Race Director
Joined: Mar 2001
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From: Living in the Hartland
Re: AR 383 Arrived Yesterday! (dath)
Did you also install a poly trans mount to go with the poly motor mounts? I've heard that you shouldn't run poly motor mounts without a poly trans mount as well, perhaps that could cause vibration issues as well? Of course if it vibrates in neutral, maybe the trans mount has nothing to do with it...
[Modified by dath, 6:30 AM 7/11/2003]
[Modified by dath, 6:30 AM 7/11/2003]
Thread Starter
Burning Brakes
Joined: Jul 2000
Posts: 1,162
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From: Beaverton, OR
Re: AR 383 Arrived Yesterday! (Tominator)
Sure hope you have better luck with your AR engine than the one that's sitting shelled out in my driveway right now...
Care to expand on that? So far have hear a lot of good about them.
[Modified by Tominator, 10:14 AM 7/11/2003]
Care to expand on that? So far have hear a lot of good about them.
[Modified by Tominator, 10:14 AM 7/11/2003]
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From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
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St. Jude Donor '06-'10, '13
Re: AR 383 Arrived Yesterday! (dath)
Dath - I had Mark include a 400 flywheel. In fact, I'm wondering if it's the flywheel that's causing my vibration problems right now. It vibrates/shakes even in neutral around 1200-3300 rpms. Mark thinks it could either be the poly motor mounts just transfering the vibration straight to the frame or that I installed the flywheel on wrong. I can't imagine I installed it wrong, it looked like it could only go on one way.
Team Owner
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From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
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St. Jude Donor '06-'10, '13
Re: AR 383 Arrived Yesterday! (tshort)
No, I'm running both poly motor and trans mounts.
You still need the short water pump.
You still need the short water pump.
EDIT: You had some questions about pulleys since you said the balancer looked bigger. It may be bigger diameter, but the mounting location for the front pulley should be the same distance from the front of the block as your old engine. I think all balancers have the same width, but may vary from 6 1/2 to 8 inches in diameter.
[Modified by BSeery, 11:13 AM 7/11/2003]
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From: At my Bar drinking and wrenching in Lafayette Colorado
Re: AR 383 Arrived Yesterday! (Tominator)
Care to expand on that? So far have hear a lot of good about them.
[Modified by Tominator, 10:14 AM 7/11/2003]
[Modified by Tominator, 10:14 AM 7/11/2003]
Team Owner
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Re: AR 383 Arrived Yesterday! (lars)
Care to expand on that? So far have hear a lot of good about them.
[Modified by Tominator, 10:14 AM 7/11/2003]
I'll be tearing down and repairing one of their engines in a few weeks. I may be posting some results based on what I find.
[Modified by Tominator, 10:14 AM 7/11/2003]
I'll be tearing down and repairing one of their engines in a few weeks. I may be posting some results based on what I find.
I got specific instructions with my engine what I could to with it and what not.. They told me where to set the rev limiter and NOT to run Nitrous because the engine wasn't built for nitrous. I drove over 8000 miles with the engine and made over 40 Drag Strip passes with it.. and mine still runs as good as on the first day...
Melting Slicks
Joined: Nov 2001
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From: Katy (Houston) TX
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Re: AR 383 Arrived Yesterday! (BSeery)
EDIT: You had some questions about pulleys since you said the balancer looked bigger. It may be bigger diameter, but the mounting location for the front pulley should be the same distance from the front of the block as your old engine. I think all balancers have the same width, but may vary from 6 1/2 to 8 inches in diameter.
LARS - Wow, I too would like to know what happened to the AR motor you have.
Melting Slicks
Joined: Jul 2002
Posts: 3,128
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From: Deltona (son of Deland and DAYTONA) FL
Re: AR 383 Arrived Yesterday! (GrandSportC3)
we'll have to wait and see what Lars finds out. The engine may have been abused, or it might be one of those freak failures.
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Re: AR 383 Arrived Yesterday! (isosceles)
we'll have to wait and see what Lars finds out. The engine may have been abused, or it might be one of those freak failures.
It's also critical that the engines are operated the way they were meant to be operated.. Timing, rev limiter setup etc...
[Modified by GrandSportC3, 4:17 PM 7/11/2003]
Thread Starter
Burning Brakes
Joined: Jul 2000
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From: Beaverton, OR
Re: AR 383 Arrived Yesterday! (BSeery)
You need a short water pump with a 3/4 inch shaft. ONLY the C3's and some trucks ran a short pump with a 3/4 inch shaft. If you get one with a 5/8" shaft you will have to change your water pump pulleys. And it will confuse the next owner as to why the bubba owner before him put on the wrong water pump :D
EDIT: You had some questions about pulleys since you said the balancer looked bigger. It may be bigger diameter, but the mounting location for the front pulley should be the same distance from the front of the block as your old engine. I think all balancers have the same width, but may vary from 6 1/2 to 8 inches in diameter.
Any particular brand flexplate? I think I need to get an externally balanced 400 168 tooth flexplate... SFI
Burning Brakes
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From: If you can read this, thank a teacher. If it is in English, thank a veteran.
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Re: AR 383 Arrived Yesterday! (Koz)
Safety Car
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From: Pearland TX
St. Jude Contributor
Re: AR 383 Arrived Yesterday! (dath)
dath,
Plan on a couple of miseries making the transition to the new engine. Ten bucks says a *vette* waterpump will not give you the correct spacing with the AR aftermarket harmonic balancer you have when you put the pulleys on. They offer high performance engines... not vette specific engines.
By the way.... take the time to get the numbers off of the back of the block to see what year you have. It might help with other parts you might need. AR put together a 355 for me with a '72 Z-28 block and there are a few differences between it and the stock '74 vette block as to where the oil pressure sensor & water temp sensor now fit.
Plan on a couple of miseries making the transition to the new engine. Ten bucks says a *vette* waterpump will not give you the correct spacing with the AR aftermarket harmonic balancer you have when you put the pulleys on. They offer high performance engines... not vette specific engines.
By the way.... take the time to get the numbers off of the back of the block to see what year you have. It might help with other parts you might need. AR put together a 355 for me with a '72 Z-28 block and there are a few differences between it and the stock '74 vette block as to where the oil pressure sensor & water temp sensor now fit.