Dyno Results - RPM B3 / Mamo MSD / Flex Fuel
07-10-2017, 03:15 PM
#21
Racer
Thread Starter
Thanks!
The following users liked this post:
Frans96ss (07-10-2017)
07-10-2017, 04:14 PM
#22
Le Mans Master
07-10-2017, 05:21 PM
#23
Le Mans Master
That will be a good run. A local guy here in Austin edged him out at TK2k this year.
I haven't seen, in person, how well that B3 can perform. It's pretty much the gold standard now. I hope to run one of the B3 cars this weekend and the other should be out soon. Also planning to run a BTR Stage 4 car to see how my little BTR 3 car does.
07-11-2017, 03:37 PM
#24
Racer
Thread Starter
I figured I was being conservative, but I would rather underestimate and be happy with the results. I going to look to drop some weight from the car next and maybe a 3.90 gear if they become available.
I've been following his testing and think it will be a good race. I'm not sure what the Lumberjack cam specs are, but he's running higher compression than me. We're planning on lining up at the next 1/2 mile race in the fall. I would be curious to see how your car fares as well against the B3 & BTR car assuming they have all supporting mods. What sort of power are you putting down / track times?
He doesn't have a high ram. He has a single plane intake with a 90 degree elbow up top. I believe he is about to test out a Holley Sniper intake in the next day or two.
That will be a good run. A local guy here in Austin edged him out at TK2k this year.
I haven't seen, in person, how well that B3 can perform. It's pretty much the gold standard now. I hope to run one of the B3 cars this weekend and the other should be out soon. Also planning to run a BTR Stage 4 car to see how my little BTR 3 car does.
That will be a good run. A local guy here in Austin edged him out at TK2k this year.
I haven't seen, in person, how well that B3 can perform. It's pretty much the gold standard now. I hope to run one of the B3 cars this weekend and the other should be out soon. Also planning to run a BTR Stage 4 car to see how my little BTR 3 car does.
07-12-2017, 07:20 PM
#25
Le Mans Master
I've been following his testing and think it will be a good race. I'm not sure what the Lumberjack cam specs are, but he's running higher compression than me. We're planning on lining up at the next 1/2 mile race in the fall. I would be curious to see how your car fares as well against the B3 & BTR car assuming they have all supporting mods. What sort of power are you putting down / track times?
The B3 and BTR4 are full bolt on/heads/cam cars running e85. So it will be a close comparison.
I put down 580/545. ~12.5 compression, e85, BTR3 cam
Best trap is 133 in 3000+ DA, spinning first gear.
B3 car trapped 131 the same day and put down around ~620/550 on the same dyno.
I think BTR4 car puts down around 630/640 on a different dyno.
07-13-2017, 05:05 PM
#26
Melting Slicks
Awesome results and great looking car! That's awesome that you included several dyno graphs. I've been on the VR dyno and it always bugged me that they insist on STD numbers. Might as well be roll racing 1/2 mile speeds.
07-14-2017, 01:16 PM
#27
Racer
Thread Starter
07-14-2017, 01:49 PM
#29
Instructor
07-16-2017, 09:12 AM
#30
Le Mans Master
He mentioned that his cam is in the middle of a BTR3 and BTR4.
The B3 and BTR4 are full bolt on/heads/cam cars running e85. So it will be a close comparison.
I put down 580/545. ~12.5 compression, e85, BTR3 cam
Best trap is 133 in 3000+ DA, spinning first gear.
B3 car trapped 131 the same day and put down around ~620/550 on the same dyno.
I think BTR4 car puts down around 630/640 on a different dyno.
The B3 and BTR4 are full bolt on/heads/cam cars running e85. So it will be a close comparison.
I put down 580/545. ~12.5 compression, e85, BTR3 cam
Best trap is 133 in 3000+ DA, spinning first gear.
B3 car trapped 131 the same day and put down around ~620/550 on the same dyno.
I think BTR4 car puts down around 630/640 on a different dyno.
Tried to set something up last night but started to rain early in the afternoon.
07-16-2017, 03:21 PM
#31
Racer
Thread Starter
So, this didn't happen. Track prep was horrible. No one was getting any kind of traction. My best trap speed was 135.9mph, starting at about 35mph, over the 1/4mi. B3 car trapped low 130's and the BTR4 car didn't show up.
Tried to set something up last night but started to rain early in the afternoon.
Tried to set something up last night but started to rain early in the afternoon.
07-16-2017, 08:18 PM
#32
He mentioned that his cam is in the middle of a BTR3 and BTR4.
The B3 and BTR4 are full bolt on/heads/cam cars running e85. So it will be a close comparison.
I put down 580/545. ~12.5 compression, e85, BTR3 cam
Best trap is 133 in 3000+ DA, spinning first gear.
B3 car trapped 131 the same day and put down around ~620/550 on the same dyno.
I think BTR4 car puts down around 630/640 on a different dyno.
The B3 and BTR4 are full bolt on/heads/cam cars running e85. So it will be a close comparison.
I put down 580/545. ~12.5 compression, e85, BTR3 cam
Best trap is 133 in 3000+ DA, spinning first gear.
B3 car trapped 131 the same day and put down around ~620/550 on the same dyno.
I think BTR4 car puts down around 630/640 on a different dyno.
07-17-2017, 08:50 AM
#33
Le Mans Master
Were you not able to correct your driveability issues with the B3? Seems odd. My tuner has the B3 in his car and it's very easy to drive. Actually, his wife daily drives the vette with the B3 in it. They had a BTR 4 in it prior to the B3 and the B3 made more power. The BTR cam also started to pit and wear within one oil change cycle.
07-17-2017, 09:23 AM
#34
Were you not able to correct your driveability issues with the B3? Seems odd. My tuner has the B3 in his car and it's very easy to drive. Actually, his wife daily drives the vette with the B3 in it. They had a BTR 4 in it prior to the B3 and the B3 made more power. The BTR cam also started to pit and wear within one oil change cycle.
Last edited by lamboworld; 07-17-2017 at 09:40 AM.
07-17-2017, 11:39 AM
#35
Le Mans Master
The B3 drives like I expect it would in low gears and low rpm's. However, I cannot get this cam to not surge in higher gears unless the rpm's are over 2200 and sometimes higher. I have talked to multiple people with the BTR4 that doesn't surge in cruise mode at 1600 rpm and I have ridden in a BTR3 car and it just simply doesn't surge like the B3. I have worked with a very good tuner locally and a nationally known tuner and the surge at 2200 in 5th or 6th gear remains. It is not horrible but enough for me to want to change. I am still looking for the right cam combination so hopefully this will be it.
My BTR 3 drives very well with very minimal surging around 1100-1200rpms.
07-17-2017, 12:14 PM
#36
I hear you but I don't think a cam change is your issue. Are you sure the B3 was installed correctly? Have you talked with Fran to see if there's anything he can see in your current tune? The BTR 4 shouldn't drive any better than the B3 if both are installed correctly. Plenty of people running the B3 cam and are not experiencing what you are. I don't think that cam would be as popular as it is if that was the case.
My BTR 3 drives very well with very minimal surging around 1100-1200rpms.
My BTR 3 drives very well with very minimal surging around 1100-1200rpms.
Cam was installed and tuned by RPM Motorsports in Raleigh, NC. They are a well known LS shop and have been in business for 15yrs. I am 100% confident that the cam is installed correctly.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
07-17-2017, 12:28 PM
#37
Le Mans Master
Cam was installed and tuned by RPM Motorsports in Raleigh, NC. They are a well known LS shop and have been in business for 15yrs. I am 100% confident that the cam is installed correctly.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
07-17-2017, 01:16 PM
#38
Racer
Thread Starter
Were you not able to correct your driveability issues with the B3? Seems odd. My tuner has the B3 in his car and it's very easy to drive. Actually, his wife daily drives the vette with the B3 in it. They had a BTR 4 in it prior to the B3 and the B3 made more power. The BTR cam also started to pit and wear within one oil change cycle.
The B3 drives like I expect it would in low gears and low rpm's. However, I cannot get this cam to not surge in higher gears unless the rpm's are over 2200 and sometimes higher. I have talked to multiple people with the BTR4 that doesn't surge in cruise mode at 1600 rpm and I have ridden in a BTR3 car and it just simply doesn't surge like the B3. I have worked with a very good tuner locally and a nationally known tuner and the surge at 2200 in 5th or 6th gear remains. It is not horrible but enough for me to want to change. I am still looking for the right cam combination so hopefully this will be it.
I hear you but I don't think a cam change is your issue. Are you sure the B3 was installed correctly? Have you talked with Fran to see if there's anything he can see in your current tune? The BTR 4 shouldn't drive any better than the B3 if both are installed correctly. Plenty of people running the B3 cam and are not experiencing what you are. I don't think that cam would be as popular as it is if that was the case.
My BTR 3 drives very well with very minimal surging around 1100-1200rpms.
My BTR 3 drives very well with very minimal surging around 1100-1200rpms.
Cam was installed and tuned by RPM Motorsports in Raleigh, NC. They are a well known LS shop and have been in business for 15yrs. I am 100% confident that the cam is installed correctly.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
07-17-2017, 01:30 PM
#39
Le Mans Master
Cam was installed and tuned by RPM Motorsports in Raleigh, NC. They are a well known LS shop and have been in business for 15yrs. I am 100% confident that the cam is installed correctly.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
Yes, I did e-mail Fran a copy of my tune a week ago and I haven't gotten a response, so that either means that it is fine or he doesn't want to mess with it.
I am pretty sure that the B3 cam is as poplular as it is because it makes good power. However, the BTR3 and 4 make as much if not more power and everyone that I have talked to with the BTR cams have been very happy with drivability.
I am curious if you have ridden in a B3 car? I highly doubt that my car is the only car that has this issue.
This issue really isn't a big deal because cams are cheap and not that time consuming to change.
My apologies for blowing up this thread.
Means neither..... I was away on vacation when i first talked to you and have been busy in the shop catching up on cars that have been needed a tune.... I will look at your file in the next couple days but i can ASSURE you... its NOT the cam causing your drivability issues.
07-18-2017, 01:22 PM
#40
Team Owner
Member Since: Oct 2004
Location: altered state
Posts: 81,242
Received 3,043 Likes
on
2,602 Posts
St. Jude Donor '05
Re: pitting, let me guess, mfr starts with a C?
Sorry to hear ...no excuse for that.
Sorry to hear ...no excuse for that.