Another 4 rotor build
Thread Starter
Rotary Enthusiast
Joined: May 2003
Posts: 912
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From: Norway
The flywheel is realy light. I have no idea how much it weighs. But it's the leigthest one i have felt.
JT
Thread Starter
Rotary Enthusiast
Joined: May 2003
Posts: 912
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From: Norway
Did not get to fully tune it today. The trumpets for the intake did not show up. So we could not take it full out. So we just did some light mapping today. But it did 285rwhp at 5500 rpm at 75% throttle
So it will be interesting to see tomorrow how much it will do at full throttle and 9000 rpm
JT
So it will be interesting to see tomorrow how much it will do at full throttle and 9000 rpm
JT
Thread Starter
Rotary Enthusiast
Joined: May 2003
Posts: 912
Likes: 1
From: Norway
A short video from today It's fully drivable now at low revs
http://s249.photobucket.com/albums/g...t=MOV00161.flv
JT
It's fully drivable now at low revs http://s249.photobucket.com/albums/g...t=MOV00161.flv
JT
Full Member
Joined: Mar 2007
Posts: 66
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From: Norway
Ok well I was going to go ahead and do a 20B swap this year. Yes yes it's upwards of 20K. But after reading this forum I think I would rather have a 26B. now to A. find a roller, and B. convince my wife I'll actually finish it.
Thread Starter
Rotary Enthusiast
Joined: May 2003
Posts: 912
Likes: 1
From: Norway
So im home now, after a 30 hour drive home from england, including 2 ferries and a stop at engine builder in sweden to pick up some parts and som chatting. And KO'ign a Moose about 12 miles from the norwegian border 
The ******* stupid moose decided to jump into the road infront of my 2500 Dodge Ram Cummins Diesel. With the trailer and rex on, total weight is almost 6 tons. But thank god the builders in detroit has made this dodge very solid. So just "minor" damage on the front left corner. It's quite pressed in, so it's a big job, but it only managed to crack the intercooler. But that happend half way home after the accident.
Well back to the seven. We just decided the engine wanted more running in before weed take it further up the RPM range. It was increasing the power by 50rwhp pr 500 rpm. But we don't want to break any seals or bearings. And with abit more compression on it, it will do more hp as well.
So it did as said 469,7rhwp at 8200 rpm, and 360,9 flywheel lbs at 8200rpm as well. The flywheel HP was 550, something. I will scan the print outs on monday.
We are going to go CDI next year as well, so that will be another 5% increase. And DTA will make a extra table for the trailing split. As of now, it's just set to one fixed number.
Now to the interesting thing. A compression test was done yesterday after about 75 min of running and slight low rpm tuning. And we got the following numbers.
1 dead even 6.5kg
2 dead even 6.1 kg
3 dead even 6.25 kg
4 dead even 6.35 kg
Now the diffrence in pressure is mainly due to the variance in rpm. As none of them had the same RPM. The firs one had the highest RPM number.
So all i can say is the NRS seals work verry vell on a NA PP engine. And you can feel it. It starts straight up. And can idle by it self after about 5-10 sec. Running a nice idle at about 1600 rpm
And you can just feel the torque in it.
Well im off to bed, as i have just slept about 2 hours total in almost 44 hours now. So good night all.
JT
The ******* stupid moose decided to jump into the road infront of my 2500 Dodge Ram Cummins Diesel. With the trailer and rex on, total weight is almost 6 tons. But thank god the builders in detroit has made this dodge very solid. So just "minor" damage on the front left corner. It's quite pressed in, so it's a big job, but it only managed to crack the intercooler. But that happend half way home after the accident.
Well back to the seven. We just decided the engine wanted more running in before weed take it further up the RPM range. It was increasing the power by 50rwhp pr 500 rpm. But we don't want to break any seals or bearings. And with abit more compression on it, it will do more hp as well.
So it did as said 469,7rhwp at 8200 rpm, and 360,9 flywheel lbs at 8200rpm as well. The flywheel HP was 550, something. I will scan the print outs on monday.
We are going to go CDI next year as well, so that will be another 5% increase. And DTA will make a extra table for the trailing split. As of now, it's just set to one fixed number.
Now to the interesting thing. A compression test was done yesterday after about 75 min of running and slight low rpm tuning. And we got the following numbers.
1 dead even 6.5kg
2 dead even 6.1 kg
3 dead even 6.25 kg
4 dead even 6.35 kg
Now the diffrence in pressure is mainly due to the variance in rpm. As none of them had the same RPM. The firs one had the highest RPM number.
So all i can say is the NRS seals work verry vell on a NA PP engine. And you can feel it. It starts straight up. And can idle by it self after about 5-10 sec. Running a nice idle at about 1600 rpm
And you can just feel the torque in it.
Well im off to bed, as i have just slept about 2 hours total in almost 44 hours now. So good night all.
JT
Senior Member
Joined: Aug 2002
Posts: 419
Likes: 1
From: Sundbyberg,Sweden
[QUOTE=jantore;9233911]So im home now, after a 30 hour drive home from england, including 2 ferries and a stop at engine builder in sweden to pick up some parts and som chatting. And KO'ign a Moose about 12 miles from the norwegian border
The ******* stupid moose decided to jump into the road infront of my 2500 Dodge Ram Cummins Diesel. With the trailer and rex on, total weight is almost 6 tons. But thank god the builders in detroit has made this dodge very solid. So just "minor" damage on the front left corner. It's quite pressed in, so it's a big job, but it only managed to crack the intercooler. But that happend half way home after the accident.
Well back to the seven. We just decided the engine wanted more running in before weed take it further up the RPM range. It was increasing the power by 50rwhp pr 500 rpm. But we don't want to break any seals or bearings. And with abit more compression on it, it will do more hp as well.
So it did as said 469,7rhwp at 8200 rpm, and 360,9 flywheel lbs at 8200rpm as well. The flywheel HP was 550, something. I will scan the print outs on monday.
We are going to go CDI next year as well, so that will be another 5% increase. And DTA will make a extra table for the trailing split. As of now, it's just set to one fixed number.
Now to the interesting thing. A compression test was done yesterday after about 75 min of running and slight low rpm tuning. And we got the following numbers.
1 dead even 6.5kg
2 dead even 6.1 kg
3 dead even 6.25 kg
4 dead even 6.35 kg
Now the diffrence in pressure is mainly due to the variance in rpm. As none of them had the same RPM. The firs one had the highest RPM number.
So all i can say is the NRS seals work verry vell on a NA PP engine. And you can feel it. It starts straight up. And can idle by it self after about 5-10 sec. Running a nice idle at about 1600 rpm
And you can just feel the torque in it.
Well im off to bed, as i have just slept about 2 hours total in almost 44 hours now. So good night all.
JT[/QUOTE
Wow the engine sound meaner and meaner as the RPMs goes up
Hp and torque at the same means that you must have more hi "hidden" inside the engine
500Nm and approx 550 hp is good numbers at low 8200 rpm
So you did run zero split? What kind of BTDC on L and T?
About compression, what rpm did you check the compression at? I have now a 13B PP motor now with Ianettii 3 mm 1p ceramics that after 1 hour break in mineral oil has at 200 rpm 1 st rotor 8.2 kg 7.7 kg and 7.5 kg. 2nd rotor 7.2 kg 7.0 kg 6.8 kg measured on the 3 flancs. This engine now makes 271 hp STP corrected base line with Gene Berg 54 mm carb.Did you meadured the compression with a Mazda rotary tester?
I definitely think the engine will make more hp as you get more hours on it
/Lasse
The ******* stupid moose decided to jump into the road infront of my 2500 Dodge Ram Cummins Diesel. With the trailer and rex on, total weight is almost 6 tons. But thank god the builders in detroit has made this dodge very solid. So just "minor" damage on the front left corner. It's quite pressed in, so it's a big job, but it only managed to crack the intercooler. But that happend half way home after the accident.
Well back to the seven. We just decided the engine wanted more running in before weed take it further up the RPM range. It was increasing the power by 50rwhp pr 500 rpm. But we don't want to break any seals or bearings. And with abit more compression on it, it will do more hp as well.
So it did as said 469,7rhwp at 8200 rpm, and 360,9 flywheel lbs at 8200rpm as well. The flywheel HP was 550, something. I will scan the print outs on monday.
We are going to go CDI next year as well, so that will be another 5% increase. And DTA will make a extra table for the trailing split. As of now, it's just set to one fixed number.
Now to the interesting thing. A compression test was done yesterday after about 75 min of running and slight low rpm tuning. And we got the following numbers.
1 dead even 6.5kg
2 dead even 6.1 kg
3 dead even 6.25 kg
4 dead even 6.35 kg
Now the diffrence in pressure is mainly due to the variance in rpm. As none of them had the same RPM. The firs one had the highest RPM number.
So all i can say is the NRS seals work verry vell on a NA PP engine. And you can feel it. It starts straight up. And can idle by it self after about 5-10 sec. Running a nice idle at about 1600 rpm
And you can just feel the torque in it.
Well im off to bed, as i have just slept about 2 hours total in almost 44 hours now. So good night all.
JT[/QUOTE
Wow the engine sound meaner and meaner as the RPMs goes up
Hp and torque at the same means that you must have more hi "hidden" inside the engine 500Nm and approx 550 hp is good numbers at low 8200 rpmSo you did run zero split? What kind of BTDC on L and T?
About compression, what rpm did you check the compression at? I have now a 13B PP motor now with Ianettii 3 mm 1p ceramics that after 1 hour break in mineral oil has at 200 rpm 1 st rotor 8.2 kg 7.7 kg and 7.5 kg. 2nd rotor 7.2 kg 7.0 kg 6.8 kg measured on the 3 flancs. This engine now makes 271 hp STP corrected base line with Gene Berg 54 mm carb.Did you meadured the compression with a Mazda rotary tester?
I definitely think the engine will make more hp as you get more hours on it
/Lasse
Full Member
Joined: May 2006
Posts: 54
Likes: 0
From: chch NZ
wow,what a car!congrates to all involved!ive been lucky enough to be at the drags in nz when the 4rotor fd was there and believe me,a 4 rotor screaming down a drag strip isnt something you forget in a hurry!!
