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103/107 kit question

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Old Dec 9, 2010 | 10:52 AM
  #11  
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The 95 big bore kit for the TC88 has been a proven performer and my understanding is it has also demonstrated excellent reliability. Can you expect the same level of reliability from the 103 (TC96) big bore kit? I'm looking for a hp/tq upgrade but not at the expense of reliability.
 
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Old Dec 9, 2010 | 12:07 PM
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Originally Posted by peddler
The 95 big bore kit for the TC88 has been a proven performer and my understanding is it has also demonstrated excellent reliability. Can you expect the same level of reliability from the 103 (TC96) big bore kit? I'm looking for a hp/tq upgrade but not at the expense of reliability.
I don't think so. The TC88 big bore kit was installed on a better bottome end and use cam plates with outer bearings. The later model bottom ends are weak, runout tolerance for warranty purposes increased from .003; to .012"; that speaks volumes. The Timken crank bearing was elminated in '03 and '02 was the last year for hot forged cranks. The connecting rods are weaker and, IIRC, the bushings were removed. The later cam plates don't have outer bearings to carry the cams.

I have two earlier models, both performance builds; a 95" and a 107". Having built a few, if I had a later model, I would go with a 120R crate motor; less than $5K from Zanotti's. However, it still has the chitty crank and no Timken crank bearing so I would pull the top end and send the bottom end to Hoban to be "Hobanized" before I installed it.
 
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Old Dec 9, 2010 | 12:12 PM
  #13  
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MY 107" kit from Fuel Moto is great The kit with everything you need except a cam spacer if needed for $1300.00. Bolted the kit up and loaded in the new map and it fired first hit of the button. IT sounds bad azz and runs strong. No need for a dyno if you already have a PCV as Feul Moto sends a new map with the kit.
 
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Old Dec 9, 2010 | 12:53 PM
  #14  
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You can read below my signiture picture and see what I had done and the dyno numbers of the results. I love the setup and tickled to death......
 
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Old Dec 9, 2010 | 01:25 PM
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I may have missed it in the other posts, but I went with a SE 106 and 251 cams. Am also running V&H Monsters and Power Duals. In my chase of 100 hp I have finally run into a problem I hadn't anticipated, the likely need for some type of compression release. Have nothing now and it seems to be eating up starter clutches. I bet manual or electronic will be big bucks, and if I change the cams to the swing weights, it would include a new dyno run. I have already been aiming to put an oil cooler on, I hope by this summer. She also is dripping oil off the air filter, don't know if 103 would be more prone than the bigger bores. And as someone said, the rod connectors get a little suspect as the torque goes up.
Its good you are doing the homework and good luck
 
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Old Dec 9, 2010 | 01:40 PM
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Originally Posted by keith t
I may have missed it in the other posts, but I went with a SE 106 and 251 cams. Am also running V&H Monsters and Power Duals. In my chase of 100 hp I have finally run into a problem I hadn't anticipated, the likely need for some type of compression release. Have nothing now and it seems to be eating up starter clutches.
Did you mean SE103 or SS106. Can you elaborate on the compression problem? That cam has an intake close of 46* ABDC and, if heads are stock, haven't been decked and you are using flat top pistons and a stock head gasket, your compression shouild not be an issue. More details and there may be another and better way to address the problem.
 

Last edited by djl; Dec 9, 2010 at 03:02 PM.
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Old Dec 9, 2010 | 02:54 PM
  #17  
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Originally Posted by djl
Did you mean SE103? Can you elaborate on the compression problem? That cam has an intake close of 46* ABDC and, if heads are stock, haven't been decked and you are using flat top pistons and a stock head gasket, your compression shouild not be an issue. More details and there may be another and better way to address the problem.
I'm guessing he means S&S 106 kit.

As far as compression releases go, based on others' experiences with starting issues I had my mechanic add electronic CRs when he installed my SE 103 kit with 255 cams. So far no problems.
 
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Old Dec 9, 2010 | 03:07 PM
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Originally Posted by Twinrider
I'm guessing he means S&S 106 kit.

As far as compression releases go, based on others' experiences with starting issues I had my mechanic add electronic CRs when he installed my SE 103 kit with 255 cams. So far no problems.
Probably so, just checking becaus he did refere to a 103 later in his post.

Compression releases or not, the 255 with the late intake close is prone to ping; very high corrected and cranking compression. A cam swap maybe a quick fix for keith. The new SE254, from what I have seen, preforms better than the 255 with mucl less compression.
 

Last edited by djl; Dec 10, 2010 at 11:44 AM.
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Old Dec 9, 2010 | 03:33 PM
  #19  
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S&S is what I meant guys, and I went to it last year about this time at about 10K miles, now at about 24 K. And I was at a dyno shop to get the ping out, you referred to. After the upgrade to the 106, from 96 ci with 251 cams and the super tuner, last summer the starter clutch was going out which the warranty took care of, and it seems to be doing the same thing again, especially when hot.
The dyno guy did fix the maps and she runs better as far as running, and may even start a little easier, but I think that clutch is doomes.
 
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Old Dec 9, 2010 | 04:52 PM
  #20  
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Originally Posted by djl
Probably so, just checking becaus he did refere to a 103 later in his post.

Compression releases or not, the 255 with the late intake close is prone to ping; very high corrected and cranking compression. A cam swap maybe a quick fix for keith. The new SE254, from what I have seen, preforms better than the 25 with mucl less compression.
That's what the mechanic in charge at Zannotti's told me. He said the new 254E allows easier starting and performs slightly better than the 255.
 
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