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6.1 crank toner ring #2725997
12/21/19 11:26 PM
12/21/19 11:26 PM
Joined: Dec 2006
Posts: 125
Loganville, GA
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Stewart Offline OP
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Stewart  Offline OP
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Joined: Dec 2006
Posts: 125
Loganville, GA
I have started putting one of the Mclaren 305 Gen 3 engines together and have hit a snag. The Bryant crank has 4 holes to mount the crank position ring but the 6.1 rings I have don't fit. Bolt circle is off. I called Bryant and they had all the info on the crank from 2006 except what I need. They were very helpful and searched all the info they had It called out 4 bolt holes but no info on dimensions. Anyone know of a ring other than the 6.1 for the gen 3 with 4 bolts? This is 1 oddball crank.

Re: 6.1 crank toner ring [Re: Stewart] #2726032
12/22/19 09:42 AM
12/22/19 09:42 AM
Joined: Nov 2003
Posts: 1,837
NW Indiana
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fbs63 Offline
top fuel
fbs63  Offline
top fuel
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Joined: Nov 2003
Posts: 1,837
NW Indiana
Try Molnar. They sell toner rings. Worse case they may sell you a blank to drill the bolt circle you need.

Re: 6.1 crank toner ring [Re: Stewart] #2726293
12/23/19 01:10 AM
12/23/19 01:10 AM
Joined: Dec 2019
Posts: 2
NJ
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Hemijoejr2 Offline
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Hemijoejr2  Offline
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Joined: Dec 2019
Posts: 2
NJ
I wish I knew. I have block MCI 003 but bought just the bare block.

Re: 6.1 crank toner ring [Re: Hemijoejr2] #2726359
12/23/19 11:23 AM
12/23/19 11:23 AM
Joined: Dec 2006
Posts: 125
Loganville, GA
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Stewart Offline OP
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Stewart  Offline OP
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Joined: Dec 2006
Posts: 125
Loganville, GA
Joe
The block is an odd ball too. I have 2 but I have the Bryant cranks and Carillo rods too. The blocks are cut for 1.06 lifter bushings. Also cut for roller cam bearings. The crank is built with a snout for a chevy ATI damper with belt drive for external oil pump. No provision on the crank for the oil pump drive. The block and crank are machined for chevy LS mains. That means a Gen 3 crank will nor fit. They did that to get the full 360 degree thrust bearing on #3 so the journals are different diameters and the block and cap have been cut to get the LS thrust in. There were 5 of these setups so somewhere is a crank that won't fit anything since you have the block.

Re: 6.1 crank toner ring [Re: Stewart] #2726376
12/23/19 01:03 PM
12/23/19 01:03 PM
Joined: Dec 2019
Posts: 2
NJ
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Hemijoejr2 Offline
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Hemijoejr2  Offline
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Joined: Dec 2019
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NJ
Originally Posted by Stewart
Joe
The block is an odd ball too. I have 2 but I have the Bryant cranks and Carillo rods too. The blocks are cut for 1.06 lifter bushings. Also cut for roller cam bearings. The crank is built with a snout for a chevy ATI damper with belt drive for external oil pump. No provision on the crank for the oil pump drive. The block and crank are machined for chevy LS mains. That means a Gen 3 crank will nor fit. They did that to get the full 360 degree thrust bearing on #3 so the journals are different diameters and the block and cap have been cut to get the LS thrust in. There were 5 of these setups so somewhere is a crank that won't fit anything since you have the block.
Yup, I checked everything out already. 4.080” bore with LS main bearings, the roller cam bearings, and lifter bushings. It’s a neat piece, that’s for sure. I’m probably going to bag it up and put it under the bench until I figure out if I want to spend the dough to have a crank made or have a new crankshaft all welded up in order to use it.

Re: 6.1 crank toner ring [Re: Hemijoejr2] #2726412
12/23/19 03:52 PM
12/23/19 03:52 PM
Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
Does an LS use a similar tone wheel arrangement? If they liked LS main bearings...

Kevin

Re: 6.1 crank toner ring [Re: Twostick] #2726467
12/23/19 09:25 PM
12/23/19 09:25 PM
Joined: Jul 2019
Posts: 194
Springtown Pa
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Ray408G3Hemi Offline
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Ray408G3Hemi  Offline
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Joined: Jul 2019
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Springtown Pa
Yes, try a LS tone wheel......any one want to sell one of these Odd ball blocks ?


1963 Thunderbolt 496FE 10.80 (still a work in progress)
1968 Mustang slow a$$ 428 FE
1971 Boss 351 Mustang 11.20@115mph
1993 Lightning 10.61 @ 129mph 408Ci A3 headed NA
1996 Viper GTS
2001 Lightning 8.99 @ 155MPH 5.4 Mod Motor
2009 Ram 9.65@144MPH 463CI G3 NA
2010 Challenger 9.91 @ 139MPH 408CI G3ci NA
2019 F150 (local dealer's Lightning package) ..11.90s

Re: 6.1 crank toner ring [Re: Ray408G3Hemi] #2726502
12/23/19 11:30 PM
12/23/19 11:30 PM
Joined: Dec 2006
Posts: 125
Loganville, GA
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Stewart Offline OP
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Stewart  Offline OP
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Joined: Dec 2006
Posts: 125
Loganville, GA
The LS tone ring doesn't bolt on. Think it is heated and pressed on the rear of the crank. May have to buy one and try to see if somehow it fits. If the crank was made to press fit the ring don't know why they would have put the 4 bolt holes in but worth a try.







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