Triumphrat

rotaryracer · 11-19-2008, 04:46 PM

Hey guys - I have an '06 Thruxton, pretty much bone stock at this point. I got the bike with TORS from the dealer and like them - nice sound without angering the neighbors. I'm going to do a NARK in the near future and was considering a set of Dominators.

Aside from a slightly sweeter exhaust note (which might get more neighborhood notice

), will the Dominators or Predators flow noticeably more than TORS? More HP, torque, different curve, etc.? With Brent's 10% off sale, I'm very tempted but am having a tough time justifying a new exhaust when I'm really not dissatisfied with the TORS. If the Dominators drove a nice jump in power when combined with a NARK on an otherwise stock 865cc, that might help. Also, if I get really nutty and do a 904cc kit with Mikuni HSR42s, would the TORS be too much of a restriction?

Any feedback is appreciated, particularly from those that have gone from TORS to Dominators/Predators. It's high 20s/low 30s here today with white sh!t on the ground, so dreaming about my Thuxton is keeping me sane till spring.

Thx...

Jason

propforward · 11-19-2008, 04:59 PM

The TORs are surprisingly restrictive - I only know that from some minor jetting mucking about on my own bike.

My understanding is that the preds flow more freely, and allow for a larger main jet to be used than if you were using TORs (with the airbox gone anyway), but I couldn't tell you how much HP is involved, 'cos I haven't done it yet.

I think you would get a good power jump if you pulled the airbox and kept the TORs. I was going to do that, but decided to heck with it and bought preds anyway.

I might do an apples to apples TORs vs Preds power comparison in spring, if I feel the urge. But I might not.

mikeinva · 11-19-2008, 06:58 PM

yep preds flow alot better.Have a better sound to.There not that load unless your on the gas hard.

sweatmachine · 11-19-2008, 07:58 PM

Quote:

Originally Posted by rotaryracer

Also, if I get really nutty and do a 904cc kit with Mikuni HSR42s, would the TORS be too much of a restriction?

yep, you'll want the preds/dominator sports in that case.

propforward · 11-19-2008, 09:18 PM

And here is some evidence:

robnobrakes TORs vs Preds Dynos

Which is cool - means I don't have to arse around proving it. I can go straight to my predators and be done with it.

Robnobrakes must know his stuff, he comes from the same place as me.

Anyway, the dyno facts speak for themselves - the sound aspect you have to judge for yourself. I can't wait to find out on that one!

mikeinva · 11-19-2008, 09:27 PM

Quote:

Originally Posted by propforward

And here is some evidence:

robnobrakes TORs vs Preds Dynos

Which is cool - means I don't have to arse around proving it. I can go straight to my predators and be done with it.

Robnobrakes must know his stuff, he comes from the same place as me.

Anyway, the dyno facts speak for themselves - the sound aspect you have to judge for yourself. I can't wait to find out on that one!

lol I hope you know better then not to run air filters

propforward · 11-19-2008, 09:34 PM

Dammit! Did I paste the wrong link in there? I'll go check.

As long as he was doing apples to apples TORs vs Preds it doesn't matter - although, yeah, I'm putting air filters on. It's dusty around here.

EDIT: No - that's the thread - it's an old one but it's still valid - he says he was using K and N pods, so I'm not sure where your no air filter comment comes in Mike? It's a nice comparison in fact.

wolverine · 11-20-2008, 10:26 AM

Quote:

Originally Posted by propforward

Dammit! Did I paste the wrong link in there? I'll go check.

As long as he was doing apples to apples TORs vs Preds it doesn't matter - although, yeah, I'm putting air filters on. It's dusty around here.

EDIT: No - that's the thread - it's an old one but it's still valid - he says he was using K and N pods, so I'm not sure where your no air filter comment comes in Mike? It's a nice comparison in fact.

He "was" using K&N filters. Now he runs FCR39 with velocity stacks...however his engine seems still healthy looking at his last dyno (http://www.triumphrat.net/twins-tech...ke-cams-3.html).

propforward · 11-20-2008, 11:03 AM

Oh right. Well, I will be continuing to use air filters, since I can gaurantee a healthy amount of dust in the air where I live.

mikeinva · 11-20-2008, 05:06 PM

Quote:

Originally Posted by wolverine

He "was" using K&N filters. Now he runs FCR39 with velocity stacks...however his engine seems still healthy looking at his last dyno (http://www.triumphrat.net/twins-tech...ke-cams-3.html).

that seams to be a pretty good running 904 thats din hp so I think that is 86hp sae not bad.If he rides it much it wont stay fast long with the stacks.Air filters are must if you ride the bike much and there are filters out there that flow just as good as no filters so its kinda dumb to take the chance.