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Andrews 21H in TC96 bagger

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  #1  
Old 02-24-2009, 11:48 AM
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Default Andrews 21H in TC96 bagger

Has anyone installed Andrews 21H cams in a TC96 bagger? I'm asking because I have the opportunity to buy a set of 21H's for $210. Here is my present configuration:

Stock TC96 except:

1. Jackpot mufflers
2. PCV with Auto-Tune
3. SE AC w/cleanable element

Conditions and what I want to accomplish:

1. Will probably reuse stock pushrods.
2. I want no loss of low-end or midrange anywhere in the chart.
3. Need an increase of 5 ft. lbs. of TQ or more from 2300-4000 RPM.
4. I'm not concerned with peak HP, just TQ between 2300 and 4000 RPM. I would basically like to see my TQ chart move up without skewing to the right, and looking like a long rolling hill instead of Pike's Peak.

Questions:

1. Will this cam accomplish this? Has anyone installed these cams without other engine mods?
2. What will be the effect on peak HP, although not my primary concern. I wouldn't think it would change HP much.
3. Does anyone have a before-after dyno chart on a TC96 (stock comp. and heads) with these cams?
4. Is it necessary to replace the stock inner bearings with either new stock or Torrington B-168? I don't have a bearing puller/installer for this engine, only for the B-148's (TC88).

Here is the dyno chart for my existing setup:

 
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Old 02-24-2009, 01:31 PM
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Originally Posted by iclick
Has anyone installed Andrews 21H cams in a TC96 bagger? I'm asking because I have the opportunity to buy a set of 21H's for $210. Here is my present configuration:

Stock TC96 except:

1. Jackpot mufflers
2. PCV with Auto-Tune
3. SE AC w/cleanable element

Conditions and what I want to accomplish:

1. Will probably reuse stock pushrods.
2. I want no loss of low-end or midrange anywhere in the chart.
3. Need an increase of 5 ft. lbs. of TQ or more from 2300-4000 RPM.
4. I'm not concerned with peak HP, just TQ between 2300 and 4000 RPM. I would basically like to see my TQ chart move up without skewing to the right, and looking like a long rolling hill instead of Pike's Peak.

Questions:

1. Will this cam accomplish this? Has anyone installed these cams without other engine mods?
2. What will be the effect on peak HP, although not my primary concern. I wouldn't think it would change HP much.
3. Does anyone have a before-after dyno chart on a TC96 (stock comp. and heads) with these cams?
4. Is it necessary to replace the stock inner bearings with either new stock or Torrington B-168? I don't have a bearing puller/installer for this engine, only for the B-148's (TC88).

Here is the dyno chart for my existing setup:

For your combo I would go with Andrews 26 you will like it better. The 26 is a good cam. It has a better ranger of power 1800-5200 rpm. ABDC is 35 for the 26. The 21 is 1700-4800rpm with less tq. ABCD is 30 you will see a little more tq of the start with the 21 but it wont hold like the 26 will.
 
  #3  
Old 02-24-2009, 01:47 PM
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Already provided what I could regarding install, b-148's... at htt

And at 4800 rpm - you will be doing... what ?... a 110mph or something... lol
 

Last edited by KumaRide; 02-24-2009 at 01:51 PM.
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Old 02-24-2009, 05:02 PM
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Originally Posted by DRAGOSBIKEWORKS
For your combo I would go with Andrews 26 you will like it better. The 26 is a good cam. It has a better ranger of power 1800-5200 rpm. ABDC is 35 for the 26. The 21 is 1700-4800rpm with less tq. ABCD is 30 you will see a little more tq of the start with the 21 but it wont hold like the 26 will.
I know the 26 is a good cam, and many riders of TC88's have used them with success. But the 26 will move the TQ curve to the right and I don't want that, or at least I want to minimize it. I don't care about anything above 4000 RPM as long as peak HP isn't worse, which isn't likely. I secretly would like a boost in HP, but not at the expense of the low-end.
 
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Old 02-24-2009, 06:39 PM
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The direction you are looking, I would look into a Woods Cam. Woods TW-6. But I would use adjustable pushrods, just to have them. Could even use Quickie types.
Pure Torque. Lower lift, bolt in, version of the 7H. From low RPM's, 1500 up, I don't think you can get much more without a supercharger.
 
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Old 02-24-2009, 06:47 PM
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Originally Posted by iclick
........... I don't care about anything above 4000 RPM as long as peak HP isn't worse.....

This is a very good question. Will the peak HP suffer with [Andrews 21 or 26] bolt in torque cams? I am struggling with the same choice.
 
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Old 02-25-2009, 06:22 AM
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Not to contradict, only mention that we have been seeing great results with a Wood 6-6, combined with a 4* advanced gear. Currently doing the 4th one of those this year.
Great early torque, that continunes to carry out.
Scott
 
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Old 02-25-2009, 08:42 AM
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Originally Posted by iclick
I know the 26 is a good cam, and many riders of TC88's have used them with success. But the 26 will move the TQ curve to the right and I don't want that, or at least I want to minimize it. I don't care about anything above 4000 RPM as long as peak HP isn't worse, which isn't likely. I secretly would like a boost in HP, but not at the expense of the low-end.
It sounds like you want a SE.203 cams
 
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Old 02-25-2009, 08:26 PM
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Originally Posted by Hillsidecyclecom
Not to contradict, only mention that we have been seeing great results with a Wood 6-6, combined with a 4* advanced gear. Currently doing the 4th one of those this year.
Great early torque, that continunes to carry out.
Scott
There is one dyno chart on the woods site (here) that looks like what I'm after. I called Bob Woods and he wasn't sure how this bike was set up, as he didn't do the work or dyno. Did it have higher compression? The 4°-advance gear? Who knows. The other dynos charts of TC96's with the TW6-6 aren't what I'm looking for, moving the curve too much to the right with a weak low-end.

Anyway, the TW6-6 and 4° gear is out of my budget range, over $500. I can afford the $210 for the TW21's I've found, but I'm still not convinced they will work as needed. The specs suggest that they might, but I have not seen any dyno curves from any source, and Andrews either has none or won't release them.
 
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Old 02-25-2009, 09:34 PM
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I had the Andrews26 cams on my 96"
They work great out of the hole-4500rpm's After that they run out of juice. They are really good if your not porting or bumping up the compression. Basicly I think they are great for the 96". Your bike will run quite a bit cooler than stock. You'll see why when you take out the stock cams. They are junk. No cam overlap, no duration and very hard on your engine. I would not have changed the 26's, but I went to a 103"
The 26's don't work well with the 103" with porting. They just don't deliver enough fuel when she starts breathing. Went with the 37's. Again 26's Nice cams. I have a set in the cam support plate with very few miles if you're interested. Whole package $150.00 + shipping
 


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