Boost leak test?

[qwiksilvertrav]

So has anyone performed a boost leak test at all? I own a SRT-4 as well and on those (or well any turbo car) boost leak tests are regular maitenence. Just wondering who has done one and how they did it? On my SRT I'm just used to a single turbo...just slap on the tester and pressurize the system. Not sure how I'd do one one the SHO since it's twin turbo. lol I haven't really tinkered to much under the hood yet...but how is the air intake setup exactly? One filter then branches off to two intake inlets?
Any info would be great before I poke my head under the hood.

 

[qwiksilvertrav]

Anyone?

 

[EcoBrick Bob]

The output of the 2 turbos goes into an intercooler in front of the radiator. From there it goes via the hose into the intake.

Have not seen any "Load Test" discussions on this website, at least since I've been on it, which is about 1 year.

There are various ways of checking boost levels. I have a MSD DashHawk (discontinued) that I have programmed to show me several ongoing parameters. I also do frequent logging with my SCT Tuner & their LiveLink 6.4 software. However, with the SCT system, I have not found a "boost pressure" number, but have to convert either MAPv or TIP, to determine actual boost levels.

On my EB engine and the stock Ford tune, the max boost I have gotten is around 13 PSI. The theoretical max boost with the 2-Bar MAPv sensor is 14.7 PSI. When switching out the 2-Bar MAPv sensor for a 3-Bar MAPv sensor, it appears the maximum potential of these turbos is around 22 PSI under WOT Load. However, that does not mean that the rest of the engine components, especially the Direct Injection Pump, will safely allow those PSI numbers in real-world conditions.

Probably, the only people who have a reasonable idea of what the maximum potential of this and the F150 EB engine really are, would be Ford Engine Engineering, and they are not about to tell us. I would assume that in the next year or 2 we will have much more information due to the large numbers of F-150 EB engines being sold. Please keep in mind that there are some substantial differences between the two engines and their drive trains.

 

[qwiksilvertrav]

The output of the 2 turbos goes into an intercooler in front of the radiator. From there it goes via the hose into the intake.

Have not seen any "Load Test" discussions on this website, at least since I've been on it, which is about 1 year.

There are various ways of checking boost levels. I have a MSD DashHawk (discontinued) that I have programmed to show me several ongoing parameters. I also do frequent logging with my SCT Tuner & their LiveLink 6.4 software. However, with the SCT system, I have not found a "boost pressure" number, but have to convert either MAPv or TIP, to determine actual boost levels.

On my EB engine and the stock Ford tune, the max boost I have gotten is around 13 PSI. The theoretical max boost with the 2-Bar MAPv sensor is 14.7 PSI. When switching out the 2-Bar MAPv sensor for a 3-Bar MAPv sensor, it appears the maximum potential of these turbos is around 22 PSI under WOT Load. However, that does not mean that the rest of the engine components, especially the Direct Injection Pump, will safely allow those PSI numbers in real-world conditions.

Probably, the only people who have a reasonable idea of what the maximum potential of this and the F150 EB engine really are, would be Ford Engine Engineering, and they are not about to tell us. I would assume that in the next year or 2 we will have much more information due to the large numbers of F-150 EB engines being sold. Please keep in mind that there are some substantial differences between the two engines and their drive trains.

Sweet thanks for the info! After thinking about it I'm sure doing a boost leak test by making two boost leak testers...one having a valve to fill the system up and the other just plugging the other inlet to keep air in. Then fill up the system and listen for leaks. I'm pretty positive this would work.
I just know on my SRT the factory hoses are very prone to leaking which causes problems like higher intake temps from the turbo overworking to reach it's goal among other problems.

And I plan on ordering up a stage 4 tune at some point which we get the hand held tuner as well. I think my wife is finally catching the "mod bug". hehe

 

[Billm0066]

The output of the 2 turbos goes into an intercooler in front of the radiator. From there it goes via the hose into the intake.

Have not seen any "Load Test" discussions on this website, at least since I've been on it, which is about 1 year.

There are various ways of checking boost levels. I have a MSD DashHawk (discontinued) that I have programmed to show me several ongoing parameters. I also do frequent logging with my SCT Tuner & their LiveLink 6.4 software. However, with the SCT system, I have not found a "boost pressure" number, but have to convert either MAPv or TIP, to determine actual boost levels.

On my EB engine and the stock Ford tune, the max boost I have gotten is around 13 PSI. The theoretical max boost with the 2-Bar MAPv sensor is 14.7 PSI. When switching out the 2-Bar MAPv sensor for a 3-Bar MAPv sensor, it appears the maximum potential of these turbos is around 22 PSI under WOT Load. However, that does not mean that the rest of the engine components, especially the Direct Injection Pump, will safely allow those PSI numbers in real-world conditions.

Probably, the only people who have a reasonable idea of what the maximum potential of this and the F150 EB engine really are, would be Ford Engine Engineering, and they are not about to tell us. I would assume that in the next year or 2 we will have much more information due to the large numbers of F-150 EB engines being sold. Please keep in mind that there are some substantial differences between the two engines and their drive trains.

I think you might have missed the point. Boost leak tests are used to find leaks in the system. Not to find the max of anything. Big culprits on the neon were from any of the clamps, because the oem ones were worm gear style. You put the tester on and put in 15-20 psi and listen for leaks. On this car I would probably put in 13-14 psi and see if you can find any. Your guess would be as good as mine on how to do it, because I have yet to crawl under the car, or really dig under the hood. If I recall they do make testers with a gauge on it so you can see how much pressure is in there. That would be best since we don't have a gauge.

 

[EcoBrick Bob]

I'm sure I missed the point.... but... if there are other issues like the DI pump capacity, not sure if a small leak is relevant... A BIG leak... yessss! Of course, it is one less issue if you can confirm there are NO leaks.

 

[Billm0066]

I'm sure I missed the point.... but... if there are other issues like the DI pump capacity, not sure if a small leak is relevant... A BIG leak... yessss! Of course, it is one less issue if you can confirm there are NO leaks.

Any leak is relevant on a turbocharged car.

 

[SHOZ123]

Stupid OEM BPV on the turbos leak on the Genesis Coupe.

 

[qwiksilvertrav]

Well maybe if the wife lets me touch her car I'll figure it out. I'm not to sure how the intake system works though as I haven't looked...but is ONE intake filter that branches to both turbos then? Ugh I'll have to look.
Either way I'm guessing a boost leak test would consist of tearing out the intake system, putting on a boost leak tester on one turbo with a valve to fill the system and just plugging the other turbo inlet up...then filling up the system. And yeah I think 15 woudl be plenty considering it won't go over that stock.

 

[Blackwire1217]

Hey, here is some information that should help with what your wondering about...

This is the intake track from the filter to the turbos


This is the intake track from the turbos to the manifold

 

[qwiksilvertrav]

Nice post thanks. And to the previous poster I in know was interested in knowing the max boost or anything. I just want to keep the system leak free...thats all. Any turbo charged car will suffer from boost leaks.
I wonder if the dealer is capable of doing a turbo system pressure check procedure or something? I wouldn't' really care to perform a boost leak test on this car. On my SRT it's insanley simple but this twin turbo is another story lol.

 

[SHOZ123]

There is still one point at the in and out of the intake track though. You should still be able to do an easy pressure check. If no leaks then move on to the individual intakes from each turbo.