|Q: How much power will the QBM Camshaft Timing Tool give me?A: QBM Camshaft Timing Tool is just that – a tool that allows you to adjust the camshafts to known values. The QBM Camshaft Timing Tool itself does not give any power increases, and QBM cannot guarantee power increases when using the QBM Camshaft Timing Tool. The engine’s power output is determined by the camshafts themselves; not by the QBM Camshaft Timing Tool. Changing the camshaft timing affects the power characteristics of the engine, sometimes in a positive way, sometimes in a negative way.
Q: Does the ECU interfere with the camshaft timing changes? Do I need to reset my ignition timing once I adjust the camshafts?
A: No. The QBM timing tool adjusts camshaft timing which is different from ignition timing. Base ignition timing is however referenced via the distributor pickup on the intake camshaft. So moving the intake camshaft will change base ignition timing in the short term. But as soon as the vehicle is started, the ECU will automatically reset the base timing back to what it should be. Therefore base ignition timing will remain unchanged.
Q: My car has variable valve timing (VVT). Will I be able to benefit from the QBM Camshaft Timing Tool?
A: On models with single VVT, only one camshaft is controlled by VVT – the other is not controlled by VVT and stays static. The static camshaft is the one that can benefit from the QBM Camshaft Timing Tool.
Q: Does the QBM Camshaft Timing Tool require me to remove or replace parts like the timing belt, water pump, camshafts, etc?
A: No, the ONLY part that gets temporarily removed is the plastic timing cover (held on by 1 bolt). Detailed installation instructions are included, and it takes less than 60 seconds to remove the plastic cover.
Q: What are the long term effects? Will there be more wear and tear on the engine?
A: There are absolutely no long term effects as long as your engine is in a good state of tune. Wear and tear on the engine won’t be any different than it normally would, regardless of what your camshaft timing is set to.
Q: Will I need a remap once I adjust the camshaft timing?
No. The QBM timing tool simply changes camshaft timing, not ignition timing. Camshaft timing controls when the intake valves open to let charge into the combustion chamber, and when the exhaust valves open to expel the spent gases.
Q: What if I adjust the cams too much – can I damage my engine?
A: The camshaft gears are slotted from the factory (+/- 7.5 degrees), so Volvo intended the camshafts to be adjusted for various reasons. Volvo has already determined the “safe” adjustment range, and you cannot exceed that 7.5 degree safety factor. However, if you are using larger camshafts (NA cams) or have extreme engine modifications like a milled head or decked block, you should make small adjustments until you have determined the valve-piston clearance is not an issue.
Q: I have the following mods: ECU chip V, turbo upgrade W, air intake X, exhaust Y, downpipe Z. What should I set the camshaft gears to?
A: There is no one magical setting that is perfect for every engine. The idea behind using the QBM Camshaft Timing Tool is to determine the best camshaft timing for your vehicle based on whatever modifications you have. This can be performed a number of ways (dyno, G-Tech, drag racing, stopwatch) and is the best way to ensure optimal results on your vehicle. Detailed installation instructions are included, as well as “universal” settings and guidelines in the instructions. Those can be used to get you in the ballpark. In general you can gain low end power by advancing the camshafts, and top end power by retarding the camshafts.
Q: Will QBM Camshaft Timing Tool affect my idle?
A: No, in most cases idle quality is not affected. In some cases (like running the larger NA cams on the turbo engine) the idle can be more sensitive to changes due to the higher lift and increased overlap characteristics of the NA camshafts.
Q: Does the QBM Camshaft Timing Tool stay permanently on the car?
A: No, the QBM Camshaft Timing Tool is a tool for adjusting the camshafts only. Adjustments are made while the engine is not running. Once the camshaft has been adjusted the QBM Camshaft Timing Tool is removed before the vehicles is started.
Q: Is this something that I can install and adjust myself, or should I have a mechanic do it?
A: With the included instructions, it’s easy. There is a giant + and – sign on the timing plate. If you set it to “+4″ that means the camshaft is advanced 4 degrees over top dead center.
Q: Is it better to advance or retard the camshaft timing?
A: In GENERAL, for low end power you advance the camshafts, and top end power you retard the camshafts.
Q: I don’t have access to a dyno. Can I tune my camshafts “by the seat of my pants”?
A: A dyno is the easiest, fastest, and safest way to find the optimal camshaft timing for your vehicle. However, in a pinch other methods can be used (G-Tech, drag racing, stopwatch, etc). The key is keeping all variables constant (environmental variables like wind, temperature, humidity, etc), and repeating all tests on the the same stretch of road. This way, you can attribute any differences you measure to camshaft changes.
Q: OK, I am going to go to the dyno. What procedure should I use to tune the camshafts using the QBM Camshaft Timing Tool?
A: Tuning the camshafts using the QBM Camshaft Timing Tool is just a matter of trying different combinations. The following is an EXAMPLE for illustration purposes:
Let’s say you started with both camshafts at 0 and you made a baseline dyno run. You then advance the intake camshaft to +1 and the exhaust camshaft to +2. After retesting the car on the dyno you notice that you gained some low and and midrange power. Since you don’t know if the gains were from advancing the intake camshaft or advancing the exhaust camshaft, you will have to adjust 1 or the other (not both at once) and do another dyno run. Leaving the exhaust at +2, you advance the intake camshaft to +2. After retesting the car with the new intake camshaft setting, you lose power. The power loss indicates that the intake camshaft likes it best when set back to +1. You set the intake camshaft back to +1, and now try adjusting the exhaust camshaft by itself. Leaving the intake camshaft at +1, you advance the exhaust camshaft to +3 and retest. If you gain power, that means you can adjust the exhaust camshaft some more. With the intake camshaft still at +1, you try advancing the exhaust camshaft to +4 and retesting. Let’s say this time you lost power with the intake camshaft at +1 and the exhaust camshaft at +4. The power loss indicates that the exhaust camshaft likes it best when set to +3. Therefore, your final dyno tuned settings are +3 on the exhaust camshaft and +1 on the intake camshaft. You set the cams back to those settings and you’re done!
Q: How does this affect gas mileage?
If your car is red or black, you will get better gas mileage. If your car is blue or silver, you will get slightly worse gas mileage. But if you have a wagon, your mileage will get better no matter the color, except on Tuesdays and Saturdays.
Q: Do you ship outside of the USA?
A: Yes! QBM has many customers outside of North America, including Europe, the Middle East, Asia, Australia, etc.