Taking a chance - Cavalli BB Turbo
Jun 25, 2017, 09:20 PM
#78
Newbie
Thread Starter
Sorry everybody, I haven't been messing with the car. Lots of life stuff happening recently. We held off on tuning until I swapped to a walbro 450 last week. Switching to E85 this week. Car is running great, turbo has been rock solid.
Jun 28, 2017, 05:15 AM
#80
Subd for this. I recently (last fall) over revved my engine and decided that was a good time for a build. Not expecting to have to do this it obviously was a bit of a financial concern. Being a master tech and having built many engine I took the build upon myself. Built the head with GSC everything. Built the bottom end. And of course came across some unexpected items that needed attention. Turned out my manifold had a crack, so ordered the MAP cast mani. Upon removing the turbo 3 bolts broke off in it and found some shaft play that I didn't like. Now exceeding my budget I was looking for a turbo. At the time there wasn't a lot of documentation of the Cavalli and really still isn't. However financially it made sense. FP was about 5 weeks out of a turbo and I had to get my car back on the road quickly. So...got a Cavalli stage 3. Out of the box the turbo looks great. My hopes were high. Nice looking billet, big anti surge porting. Looked great. I suffered what many had, leaking coolant from the banjo bolts. Took it apart with new oem crush washers 3 times to get it to seal. Went beyond proper torque just to do so. I have to blame the turbo for that, however it finally sealed up. Get it on the road, sounds amazing. I mean this turbo is one of the nicest I have heard. Getting excited now!!! So once the break in was done it was tuning time!!! I am tuning with Chet by the way. Now brings us up to current day. Due to lack of time I haven't completed the tune on 93 just yet but based on what little I know about logs I would imagine we are close to finishing up 93. On VDyno with a correction factor of 3 I am barely at 405hp and about 385ft lbs. Now again we aren't done but I am not expecting that much from this turbo after seeing this. Could be a little hp loss due to the manifold, Cavalli claims this turbo does not perform well with high flow manifolds. None the less the stage 3 claims 640hp capable. Even on e85 I don't think I will see 500. But that's yet to come. My experience is its pretty laggy, holds boost nice, but doesn't make its power until higher up in the RPM range. Once I get done I will post my results as well then move on to e85. But for me once I pay my savings account back for the engine build I will probably be looking at a better turbo option. Good luck and hopefully you get the results you are looking for.
Jun 28, 2017, 08:29 AM
#82
I know you are referring to his logs, however I as well owing one think its very laggy. I am not certain and I would have to look at my latest logs but I think I hit peak boost around 3800 or so. Will check and post up what I find on mine later
Jun 28, 2017, 10:15 AM
#84
Newbie
Thread Starter
I'll post logs once we get on E85 and actually finish the tune this week. I'm not going to jump at the thought of you trying to flame me, I'll post them when I get the tune done.
Jun 28, 2017, 10:57 AM
#85
On a side note I think the term "full boost" is being misused. You're stating your Turbo hits full boost at 3800 rpm when in fact according to the first and only log you've posted it crosses the vacuum to boost threshold st 3800rpm. Your boost plot says you're not hitting full boost, 26psi, until 4400rpm.
I'll use my car as an example. My car hits 26psi at 3550rpm, 850rpm quicker than your cavalli Turbo. My car hits "full boost", 30psi, at 3750rpm.
What we want to see from these logs is your claim of your car hitting "full boost", 26psi, at your claimed 3800rpm as opposed to your initial log of 4400rpm.
Not trying to be a dick here, just trying to inform you on what we're interested in seeing
Jun 28, 2017, 11:17 AM
#86
I don't think anyone is trying to flame you. A few of us have been around a while and know that the cavalli stuff has not been that great or reliable. If you have a cavalli Turbo that spools as fast as you're saying it does, then we want to see it cause you're about the only one.
On a side note I think the term "full boost" is being misused. You're stating your Turbo hits full boost at 3800 rpm when in fact according to the first and only log you've posted it crosses the vacuum to boost threshold st 3800rpm. Your boost plot says you're not hitting full boost, 26psi, until 4400rpm.
I'll use my car as an example. My car hits 26psi at 3550rpm, 850rpm quicker than your cavalli Turbo. My car hits "full boost", 30psi, at 3750rpm.
What we want to see from these logs is your claim of your car hitting "full boost", 26psi, at your claimed 3800rpm as opposed to your initial log of 4400rpm.
Not trying to be a dick here, just trying to inform you on what we're interested in seeing
On a side note I think the term "full boost" is being misused. You're stating your Turbo hits full boost at 3800 rpm when in fact according to the first and only log you've posted it crosses the vacuum to boost threshold st 3800rpm. Your boost plot says you're not hitting full boost, 26psi, until 4400rpm.
I'll use my car as an example. My car hits 26psi at 3550rpm, 850rpm quicker than your cavalli Turbo. My car hits "full boost", 30psi, at 3750rpm.
What we want to see from these logs is your claim of your car hitting "full boost", 26psi, at your claimed 3800rpm as opposed to your initial log of 4400rpm.
Not trying to be a dick here, just trying to inform you on what we're interested in seeing
Jun 28, 2017, 11:39 AM
#87
I don't think anyone is trying to flame you. A few of us have been around a while and know that the cavalli stuff has not been that great or reliable. If you have a cavalli Turbo that spools as fast as you're saying it does, then we want to see it cause you're about the only one.
On a side note I think the term "full boost" is being misused. You're stating your Turbo hits full boost at 3800 rpm when in fact according to the first and only log you've posted it crosses the vacuum to boost threshold st 3800rpm. Your boost plot says you're not hitting full boost, 26psi, until 4400rpm.
I'll use my car as an example. My car hits 26psi at 3550rpm, 850rpm quicker than your cavalli Turbo. My car hits "full boost", 30psi, at 3750rpm.
What we want to see from these logs is your claim of your car hitting "full boost", 26psi, at your claimed 3800rpm as opposed to your initial log of 4400rpm.
Not trying to be a dick here, just trying to inform you on what we're interested in seeing
On a side note I think the term "full boost" is being misused. You're stating your Turbo hits full boost at 3800 rpm when in fact according to the first and only log you've posted it crosses the vacuum to boost threshold st 3800rpm. Your boost plot says you're not hitting full boost, 26psi, until 4400rpm.
I'll use my car as an example. My car hits 26psi at 3550rpm, 850rpm quicker than your cavalli Turbo. My car hits "full boost", 30psi, at 3750rpm.
What we want to see from these logs is your claim of your car hitting "full boost", 26psi, at your claimed 3800rpm as opposed to your initial log of 4400rpm.
Not trying to be a dick here, just trying to inform you on what we're interested in seeing