12a TBI Roll Call
11-12-06, 04:08 PM
#27
OHhh yea
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autonomics are alright
not very good for turbo setup but works pretty good
if you think fi is easier you are mistaken
sure you get alot more thinkgs to change then two screws and jets
but you have to learn a whole lot to find out what they all do
learning about a carb first would be alot easier in my opinion
but since i love the challenge I went tbi
before
after
not very good for turbo setup but works pretty good
if you think fi is easier you are mistaken
sure you get alot more thinkgs to change then two screws and jets
but you have to learn a whole lot to find out what they all do
learning about a carb first would be alot easier in my opinion
but since i love the challenge I went tbi
before
after
11-12-06, 11:16 PM
#28
FB+FC=F-ME
On the subject of turbos and TBI,it has been done by several Chevy guys.
However,the Rochester TBI units have a propensity for wearing their throttle shaft bushings.Ive replaced mine once already. Adding boost will only make things worse,since the pressure will place more load on the throttle shafts.Owners of boosted TBI engines report frequent failure of the bushings,boost leaks around the shafts,and constant fuel leakage onto the intake manifold and TBI outer body.
However,the Rochester TBI units have a propensity for wearing their throttle shaft bushings.Ive replaced mine once already. Adding boost will only make things worse,since the pressure will place more load on the throttle shafts.Owners of boosted TBI engines report frequent failure of the bushings,boost leaks around the shafts,and constant fuel leakage onto the intake manifold and TBI outer body.
11-13-06, 10:05 AM
#29
Duct-tape fixes all
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I agree with the Chev V-6 option. I work in a scrap yard, and we have alot of Chev V-6 with TBI. All you need to do is use the hardware (the actualy throttle body), and run a megasquirt computer. That way you will not have to mess around with O2 sensors. In order to make it all fit you will have to make an adapter plate to mount the throttle boddy to the Carb Spacer, or base. The only reason one might want to keep the Carb Spacer is to try and keep the vacume advance. As for a MAP sesnor, I supose you could also use teh Chev unit. That I am not sure about. I am also unsure how the OMP's will operate with out a carb? (somone please fill me on that). Either way it is not a major issue, just run a premix and everything is good.
11-13-06, 11:21 AM
#30
MattG FTW!!!!!
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Yes, the more I looked into TBI the more I decided I likes the carb alot better. At the time of this thread I couldnt find a single carb that would work, and I was just fed up with them.
I now have my sterling carb, my wideband unit and my jets, and im in the process of tuning.
I now have my sterling carb, my wideband unit and my jets, and im in the process of tuning.
11-13-06, 12:01 PM
#31
Terrified.
Originally Posted by MattG
Yes, the more I looked into TBI the more I decided I likes the carb alot better. At the time of this thread I couldnt find a single carb that would work, and I was just fed up with them.
I now have my sterling carb, my wideband unit and my jets, and im in the process of tuning.
I now have my sterling carb, my wideband unit and my jets, and im in the process of tuning.
11-13-06, 08:35 PM
#32
FB+FC=F-ME
TBI is a great entry level type of EFI since its simple and reliable.....but it does have its place.
On a Chevy V engine,or a hotrod or classic....its a perfect choice.Gives you modern driveability but retains the old school look.Its also a great way to upgrade a daily driven vehicle that was once carbed.(Like V-8 midsized cars and Jeeps/trucks)
For a custom job,like adapting it to a rotary,its more a problem.Mainly because its not designed for that type of engine,and few/non have done it before.So your kinda treading into uncharted waters with that swap.
Yes,with time and money,you could likely sort it out and get the right sensors and values inputed into the ECU.But with plenty of port injection systems and proven,performance carbs already on the market that bolt right up to the rotary,choosing TBI seems like a step backwards.
On a Chevy V engine,or a hotrod or classic....its a perfect choice.Gives you modern driveability but retains the old school look.Its also a great way to upgrade a daily driven vehicle that was once carbed.(Like V-8 midsized cars and Jeeps/trucks)
For a custom job,like adapting it to a rotary,its more a problem.Mainly because its not designed for that type of engine,and few/non have done it before.So your kinda treading into uncharted waters with that swap.
Yes,with time and money,you could likely sort it out and get the right sensors and values inputed into the ECU.But with plenty of port injection systems and proven,performance carbs already on the market that bolt right up to the rotary,choosing TBI seems like a step backwards.
11-14-06, 08:32 PM
#33
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the GSL-SE is TBI. Also with a stanalone ECU and bigger injectors, you will be able to get more hp, more reliably, with better fuel economy with a TBI system then with a carb. TBI was the first step, but it is still better then 98% of carbs out their, that is why they made the change.
11-15-06, 01:55 PM
#34
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I would like to go FI at some point, but once I get a daily, I would guess the benefits of going FI would not make up for the cost, eventhough I think it would be really cool. With unlimited funds I think I would go in this direction: http://www.hitman.hm/ported.htm
Maybe one day I still will.(?)
Maybe one day I still will.(?)
