Stock Bottom End LQ4 F1a
06-01-2013, 11:36 AM
#41
At what RPM are you seeing 10psi? What I would try first is timing. There is no need for 13-14* timing on launch when you're only at 5psi. I would have 20-24* in it at that RPM. Then progressively pull timing out of it as rpm climbs as well as boost.
This will help the engine drive through the converters coupling transition allowing the engine to accelerate faster generating more wheel speed early. This will really help with you getting up on the tire when running slicks.
Blowers are very easy to adjust timing for as boost and rpm mirror each other 100% unlike a turbo engine.
This will help the engine drive through the converters coupling transition allowing the engine to accelerate faster generating more wheel speed early. This will really help with you getting up on the tire when running slicks.
Blowers are very easy to adjust timing for as boost and rpm mirror each other 100% unlike a turbo engine.
06-01-2013, 11:53 AM
#42
At what RPM are you seeing 10psi? What I would try first is timing. There is no need for 13-14* timing on launch when you're only at 5psi. I would have 20-24* in it at that RPM. Then progressively pull timing out of it as rpm climbs as well as boost.
This will help the engine drive through the converters coupling transition allowing the engine to accelerate faster generating more wheel speed early. This will really help with you getting up on the tire when running slicks.
Blowers are very easy to adjust timing for as boost and rpm mirror each other 100% unlike a turbo engine.
This will help the engine drive through the converters coupling transition allowing the engine to accelerate faster generating more wheel speed early. This will really help with you getting up on the tire when running slicks.
Blowers are very easy to adjust timing for as boost and rpm mirror each other 100% unlike a turbo engine.
06-01-2013, 12:05 PM
#43
Yes it can! When you hit 10psi what is the engine RPM? What I would do is have the timing set to be at 24* when you're on the transbrake so that when you're releasing the transbrake you have 24* timing in it. As RPM climbs as well as boost, pull 1-2 degrees of timing out until you're back at 14*.
This will help loosen the converter on the hit as you're applying more power and coincidentally torque which will cause the converter to slip more at that point. Try this first just to see if the converter is as tight as it seems to be judging from the video and information you've given.
This will help loosen the converter on the hit as you're applying more power and coincidentally torque which will cause the converter to slip more at that point. Try this first just to see if the converter is as tight as it seems to be judging from the video and information you've given.
10-27-2013, 07:05 PM
#46
TECH Enthusiast
Damn 4 tenths and 4 mph from a converter swap only? WOW.... You have that thing flying now...
How much boost are you seeing? Running a velocity stack on the blower?
How much boost are you seeing? Running a velocity stack on the blower?
10-27-2013, 08:45 PM
#48
This was done on 11psi with a truck hat and k&n filter on the blower. The tune did not get changed from the old convertor till after my 3rd pass yesterday it went a 1.399 60ft 9.57@142 off the trailer with just the convertor change. Then tuner just added a little more fuel after a couple passes. The convertor is a circle D the shall was 4500rpm now it 5100rpm shall.
11-23-2013, 09:10 PM
#59
11-23-2013, 11:58 PM
#60
Very nice!
You have to be close to being if not the fastest stock bottom end procharged car out there.
I'd be interested to see what it would do with a 2 step installed and limiting the launch rpm to 4200-4400rpm. Let the converter flash instead of letting it grab the motor instantly on launch.
You have to be close to being if not the fastest stock bottom end procharged car out there.
I'd be interested to see what it would do with a 2 step installed and limiting the launch rpm to 4200-4400rpm. Let the converter flash instead of letting it grab the motor instantly on launch.