Re: mancini timing belt system for sb
[Re: dart9ss]
#3085323
10/12/22 08:58 AM
10/12/22 08:58 AM
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Joined: Mar 2007
Posts: 3,277
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,277
West Coast, USA
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just wondering if anyone has used this belt system yet and what modifications where made to the cooling system or any thing else? Maybe the guy that runs Blueprint Engines, Johnny, I believe, can do a test of the changes in performance on the dyno by changing the cam timing with this set-up. It looks like a nice piece.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: mancini timing belt system for sb
[Re: jbc426]
#3085335
10/12/22 09:32 AM
10/12/22 09:32 AM
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Joined: Aug 2019
Posts: 9,450
Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
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How is a belt drive like that beneficial past the adjust-ability of that unit there?
STOP POTATO HATE!
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Re: mancini timing belt system for sb
[Re: Mr PotatoHead]
#3085362
10/12/22 10:40 AM
10/12/22 10:40 AM
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Joined: Jan 2003
Posts: 31,021
Oregon
AndyF
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I Win
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Oregon
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How is a belt drive like that beneficial past the adjust-ability of that unit there? Belt drive works better at high RPM.
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Re: mancini timing belt system for sb
[Re: DoubleD]
#3085371
10/12/22 10:56 AM
10/12/22 10:56 AM
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Joined: Aug 2019
Posts: 9,450
Super Spudsville
Mr PotatoHead
Half Baked
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Half Baked
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At what rpm are do they become helpful? Id think my 7300-7500 rpm deal would be under that but I know in my R5P7 build pile of parts is a belt drive.
STOP POTATO HATE!
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Re: mancini timing belt system for sb
[Re: dart9ss]
#3085408
10/12/22 12:18 PM
10/12/22 12:18 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
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I Live Here
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Las Vegas
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FWIW that is an Australian Muscle Parts timing belt. They make big and small block versions. Might have better luck asking about them that way
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: mancini timing belt system for sb
[Re: Al_Alguire]
#3085420
10/12/22 12:35 PM
10/12/22 12:35 PM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
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I Live Here
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I tried using one of those Austrialian Muscle Parts belt drive for the big block Mopar. After running into many interference issues, I put in a Jesel. Some examples, see my posts for more details. 572 B1 - Part 4 - Mock-ups- interferes with ATI super damper - crank pulley did not fit Callies crankshaft - not designed with roller cam end play adjustment - interferes with water pump/housing Just be prepared to have some custom work done. Hopefully the SB version is more well thought out than the BB version.
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Re: mancini timing belt system for sb
[Re: Mr PotatoHead]
#3085442
10/12/22 01:39 PM
10/12/22 01:39 PM
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Joined: Jan 2003
Posts: 31,021
Oregon
AndyF
I Win
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I Win
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Oregon
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At what rpm are do they become helpful? Id think my 7300-7500 rpm deal would be under that but I know in my R5P7 build pile of parts is a belt drive. Hard to say. I use a belt drive on any serious race engine even if the peak power is below 7000 rpm but not everyone thinks the same way. I'd say a belt drive is highly recommended for anything that is going to peak above 8000 rpm.
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Re: mancini timing belt system for sb
[Re: dart9ss]
#3085680
10/13/22 07:55 AM
10/13/22 07:55 AM
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Joined: Jan 2003
Posts: 16,925
NC
440Jim
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I Live Here
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just wondering if anyone has used this belt system yet and what modifications where made to the cooling system or any thing else? My biggest issue to overcome (big block) was getting the damper to clear the belt drive lock nuts, idler, etc; the large amount of spacer needed to move the damper out was reducing length on the crankshaft. rebel, I like some of the features of the Aussie unit also. But the fit problems stopped me from using the big block version. Can you answer the original poster's question, since you are running one?
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Re: mancini timing belt system for sb
[Re: 440Jim]
#3085757
10/13/22 01:16 PM
10/13/22 01:16 PM
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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The Aussie idler/tensioner pulley came with a regular socket head (Allen) bolt. It sticks out a lot, and hits the damper. You can replace it with a button head bolt for better clearance (but it still may not clear the damper). I mentioned this to the manufacturer, so they might be supplying the button head bolt now-a-days.
And the cam degree marks are labeled wrong. Moving it 2 deg on those marks changes the cam installed position by 4 crankshaft degrees ... Well since the cam rotates at half the speed of the crankshaft the degree marks would be correct. 4° at the crank is half that, 2° at the camshaft.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: mancini timing belt system for sb
[Re: 440Jim]
#3085898
10/14/22 07:42 AM
10/14/22 07:42 AM
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Joined: Dec 2006
Posts: 4,647
aotearoa
rebel
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aotearoa
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My biggest issue to overcome (big block) was getting the damper to clear the belt drive lock nuts, idler, etc; the large amount of spacer needed to move the damper out was reducing length on the crankshaft.
rebel,
I like some of the features of the Aussie unit also. But the fit problems stopped me from using the big block version. Can you answer the original poster's question, since you are running one?
I used half nylocs on the cam gear to improve clearance from the damper, plus I'm using an ATI damper that has a longer snout on it.
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