I was also shocked on the torque loss with the stage 1 cam but love the top end pull. The stage 1 cam HP gains show better results in the XT660 then on the Raptor motor, I think the XT has better ignition timing advance right at the top of the rev range

I want to see if I can press the stage 1 sprocket off the cam & advance the cam timing to get back the bottom end. I will first need to degree the cam to see how many degrees I want to move it by. I will do this sometime when I have time.

After testing the stage 1 cam I am not even going to test the stage 2 cam, as I have said before I want more torque with a bit more HP & was happy with the 2mm bigger bore with 11;1 piston result. If I can get 2 to 3 more HP from the head & throttle body I will be back to the 56HP mark with the big bore & XTX Cam.

The results Freez were not far off from what we expected, except the bigger bore gave alot more torque then I thought & did not expect the torque loss with the stage 1 cam going by the Raptor results.
As you say Freez we need to start to look in other areas for that HP. :sleep01:
I have out lined my next mods in another thread & am looking for the next 2hp or more from the throttle body & head. I got some quotes today on porting & +1mm inlet valves, I will sorce a 2nd head for this mod.

If I did not do these mods & show the mods with full details we would be always wondering how would a XT660 go with different mods. We are now a little closer to under standing what the XT660 motor likes.

I would be interested to see what you find with the +2 throttle body.

Not sure if I told you, but I had one made up and gained only about 1 to 1.5 HP at very low and very top end RPM. No gains at HP peak. Was actually very disappointed with the results.

At this stage I am not sure why I did not get an all round gain like the guys in the USA claim.

I have to add that since the last time I dyno tuned the raptor and after fitting the +2 TB, the bike did ingest a lot of dirt from a broken air cleaner and the intake valves did take a beating. When I checked the valve clearances on the intake valves there where nothing. In fact it was actually keeping the intakes from seating correctly and creating a good seal.

Also, it was not an exact copy of the TB they rave about in the USA, but it was +2mm bigger.

I am also not sure of the high altitude I am at messes with the bigger TB gains, since the air here is much less dense.

It might be that the bike lost 2HP and the bigger TB put it back, making it look like I gained nothing, but let's see what you get.

Just one thing I forgot to add.

There has to be a lot more power in this motor.

With the mods you run, except for the stage 2 cam, which I think only adds about 1 or 2 HP more than the stage 1 you are running now, I think we still have a lot to gain.

The one raptor that I built with a ported head, same size valves as the XT, stage 2 cam, 11:1 pistons, stock bore and stroke (same as your 700XT, custom made dual pipes, open airbox and bigger air cleaner with PCIII and ignition was pushing out 56HP on my dyno.

As you know, my dyno reads about 12% lower than what it should so this quad should be running around 64HP at the coast easy.

The Xt in theory should be able to get to the same HP if not more, since the quad has massive rear wheels with a lot more weight to reduce HP output.

Don't worry I am looking for that extra ridable HP, but most important thing to me is the torque then HP. At 50 Ft- lbs this bike is so nice to ride it brings a smile to face through the whole rev range.

I wish the Raptor boys posted more torque curves so I could see their results with mods over 60HP. It is no use having lots of HP with no torque low down for my type of riding.

Freez have you got the torque curve for the 64HP raptor with the stage 2 cam?

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Join Date: Apr 2007
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dyno results customized Trinity 2in1/TB+2/BSM 2in2
hereby the new dyno results.

Explanation

green line:
Tritity 2in1 header with customised linkpipe/collector - Micron silencer - +2mm Throttle Body (+2TB) 62.96HP 72.09 Torque

blue line:
2in2 +4mm OTR headers - BSM silencer and linkpipe. 63.31HP 75.68 Torque

red line:
2in2 +4mm OTR headers - BSM silencer and linkpipe - +2TB 66.71HP 77.52 Torque


The facts:

+2TB
The +2TB I can really recommend! It gave me an +3 HP improvement and a bit more torque.

Trinity 2in1 ( http://www.xt660.com/showthread.php?...hlight=trinity)
The customized 2in1 system will give you gain improvements, weight savings and buttom clearance. But for the best results the 2in2 I can recommend.
The 'Rally Raid' XT by OTR, which has a 104mm bigbore+OTR 2in1+PP head+OTR cam, has got about 63HP according to an article I've read. Mine XT has also almost 63HP with a 103mm bigbore, but with a +2TB. Therefore the 2in1 customized Trinity is much better.
Attached Thumbnails http://www.xt660.com/attachment.php?...1&d=1237622990

http://img341.imageshack.us/img341/1841/xtdyno.th.jpg


Got My bike back from dyno.

Leo Vince (no Db-killers), K&N Stage 1 and DNA Stage 2, PowerCommander, AIS blocked

Bike runs nice and pulls smoothly to revlimit.
I�m pleased from the results.

here dyno test is very expensive, but my bike have ported head, thin head gasket, +2TB, KN filter and dna stage2 filter.My first test to my bike at 5000 km and top speed max 160 with two person then my mechanic ported head, thin gasket, +2TB and KN filter then I tested with two person, max speed is 170 but now wind :) after I remove the snorkel and check the co +14
only me (Im 85 kg ) 176km max speed. but low and midle range not bad and not good...Last I try to DNA stage2 filter with snorkel, now low and mid range ok upper very good, its going to wheel up first and 2.nd gear change now its like a bull :) now I have stage 2 camshaft I can not dream it when I put it on
maybe I will go dyno test when I finish all mods and I share it

here ya go ,, here are a few of 700 builds ive done

First is the most common build we do many of
Rap 700
Dual exhaust
Powercommander
Intake kit
11:1 CP piston
47 mm throttle body (+3mm)
Hotcams stage 3
STOCK HEAD
DYNO TUNED
http://i23.photobucket.com/albums/b3...ucks/Scan1.jpg

Full build raptor 700
11:1 compression
HDD5050 camshaft .500/.460 lift
47mm throttle body
FCI intake kit
+1/+1mm ss Ported head
Power commander,
ignition controller
Dual exhaust /mufflers
Btw my dyno is nicknamed "THE HEART BREAKER"
http://i23.photobucket.com/albums/b3...s/001-44-1.jpg

another

Raptor 700

STOCK PISTON AND CAMSHAFT
STOCK PORTING
+3mm throttle body 47mm
power commander
ignition controller
dual exhaust, intake kit

http://i23.photobucket.com/albums/b3...cks/002-24.jpg

Some nice runs there dl700.