What did I do?
Hey SS1
in your sig it says you have the G-trim but will soon be a T-trim. What is this and is it bigger? Will it fit under the hood? What kind of price are we looking? I am trying to figure what to do.
in your sig it says you have the G-trim but will soon be a T-trim. What is this and is it bigger? Will it fit under the hood? What kind of price are we looking? I am trying to figure what to do.
I asked a question about blower sizes on here a couple of weeks ago. The general consensus was that a blower will support X amount of CFM, and the horsepower it will support is proportional to the CFM (~1.5cfm per HP).
I don't see why you can't get the same peak horsepower out of a 408 that you got out of a 346, with less boost. Something isn't adding up, so don't give up on the G-Trim yet.
FYI: The T-Trim is a larger Vortech blower that will flow ~1200cfm. You can replace the G-Trim with a T-Trim, but it will require different brackets. There is a company called RMCR Performance (not a sponsor) who sells the entire upgrade kit for just under $4000. I believe their kit is the one most of us with the T-trim are using. I think Speed Inc. also has a T-Trim bracket for our cars.
I don't see why you can't get the same peak horsepower out of a 408 that you got out of a 346, with less boost. Something isn't adding up, so don't give up on the G-Trim yet.
FYI: The T-Trim is a larger Vortech blower that will flow ~1200cfm. You can replace the G-Trim with a T-Trim, but it will require different brackets. There is a company called RMCR Performance (not a sponsor) who sells the entire upgrade kit for just under $4000. I believe their kit is the one most of us with the T-trim are using. I think Speed Inc. also has a T-Trim bracket for our cars.
10 Second Club
Joined: Apr 2002
Posts: 1,755
Likes: 2
From: Cincinnati, Ohio
That little 800cfm blower can't really feed a 408 very well. I briefly had a g-trim on with a 418 and a 2.75 pulley. It made 5#'s and you could barely feel the boost. Now the t-trim on the other hand made 12#'s and the boost effect was quite noticeable. I'd just step up to the YSi and call it a day.
well unless my G-trim is worth something close to that I can't afford it! I spent all my savings on the engine and everything I did for the car already! Can you hook it up with the rest of the system? just change out the blower and keep the same crank pulley and aftercooler and all that? Just a new bracket and new blower? Thanks for the info, anybody have one they want to sell me for a GOOD price? I have to sell my other one first though! Oh and any hood clearance issues?
Im guessing its gonna be something simple that you just havent noticed yet. You getting spark in all the cylinders? What kinda plugs did you use? What did you gap them too? All the coils plugged in, all the injecxtors plugged in and pulsing? Hows the fuel pressure?
If your seeing 7PSI and only getting 350RWHP something is very wrong. That blower is not a restriction if you are getting boost. There a rag stuck in theintake?
If your seeing 7PSI and only getting 350RWHP something is very wrong. That blower is not a restriction if you are getting boost. There a rag stuck in theintake?
I don't know if this helps but if I came home from a trip and found that my wife put in a killer motor and and fixed the paint on my car, I wouldn't give a damn if it made 2 horsepower and looked like herbie the love bug, I would be the happiest man on Earth!
Well, maybe not if it looked like herbie.
Down power can be a one of a million bugs on a new motor. Maybe the cam is off a tooth? Leaking boost somewhere (misaligned gasket?) plug electrode bent down? Low battery causing weak spark? Bad gas? I list these because I've beat my head against the wall before for each of them.
Good luck with it and let us all know how it goes!
Well, maybe not if it looked like herbie.
Down power can be a one of a million bugs on a new motor. Maybe the cam is off a tooth? Leaking boost somewhere (misaligned gasket?) plug electrode bent down? Low battery causing weak spark? Bad gas? I list these because I've beat my head against the wall before for each of them.
Good luck with it and let us all know how it goes!
Originally Posted by Mrs. Ronin
Well I am not very good at keeping the house cleaned or ironing the clothes, sometimes I can cook good but I don't have a ton of time! If your motorcycle needs to be set up for the track or your car needs fixin I am your gal! I built the engine myself! I had Texas Speed assemble the short block (pistons and crank and machine the block) I did everything else! Took the old engine out, put the new engine in and even have the old covers and pulley and misc other parts powdercoated to match the Collectors edition black and yellow paint scheme!
So relax, take a break, have your sister come post on here if shes single etc etc.
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In the pic of the engine it still has the stock fuel rails and regulator. Drop in fuel pressure maybe? Injectors too small? Should be able to see it on the wideband though. Just a thought. Make sure they set up the new displacement in the computer for the larger engine.
+1, don't worry if its not complete, he'll be happy.
+1, don't worry if its not complete, he'll be happy.
I have NGK Tr6 spark plugs gapped to whatever they need to be, lonnie set up the racetronics dual pump set up for me and I know it is working. They had a fuel pressure guage on the car for a little bit to check. injectors are FAST 55# and I think they were at 80% I am going to head over there in about an hour and 1/2 I will take the computer and keep in touch. I will check all the things mentioned and see what we see. You are right something is amiss if the car is running this bad, I just hope it is something stupid easy!
????
Originally Posted by Mrs. Ronin
I have NGK Tr6 spark plugs gapped to whatever they need to be, lonnie set up the racetronics dual pump set up for me and I know it is working. They had a fuel pressure guage on the car for a little bit to check. injectors are FAST 55# and I think they were at 80% I am going to head over there in about an hour and 1/2 I will take the computer and keep in touch. I will check all the things mentioned and see what we see. You are right something is amiss if the car is running this bad, I just hope it is something stupid easy!
I'd be REAL curious as to where all that fuel is going..
FAST injs are rated at 55# @ 3 bars. If so, at 58psi, that's a TON of fuel at 80%!!
Originally Posted by Old Geezer
55# inj's at 80% duty cycle, and making <400HP??
I'd be REAL curious as to where all that fuel is going..
FAST injs are rated at 55# @ 3 bars. If so, at 58psi, that's a TON of fuel at 80%!!
I'd be REAL curious as to where all that fuel is going..
FAST injs are rated at 55# @ 3 bars. If so, at 58psi, that's a TON of fuel at 80%!!
Thats what I was thinking....
Are these guys any good at tuning? Not trying to be a smart ***, I've just never heard of them. It makes sense that you're making less boost, thats obvious, but something is seriously wrong if your "using" all that fuel but not making any power.
Staging Lane
Joined: Aug 2005
Posts: 99
Likes: 0
From: St. Louis
This sounds a lot like my car when I ran on the dyno and in stead of 400hp I only made 290hp. What we found out was that the computer decided to dump fuel in to the motor and it just killed it. If its getting way to much fuel then that could be the problem.
No this is not the same shop that did it before. THEY broke my car before because they didn't bother to monitor the AFR!
These guys are helping me A TON! I appreciate them, they are making sure it is done right! I HIGHLY recomend them! I know this will get worked out I just hope it is in time!
I will ask about the fuel. I did ask the tech again to make sure I gave the correct info and he said the injectors were at 80-81% duty cycle. They were debating over it yesterday about where they max out and such so I know it was high duty cycle.
I checked the coil packs, the battery is new, I will check the plugs, we did find the crank bolt was not in tight enough so that may be something. We shall see what happens.
A few more hours and I should have some more info.
Thanks for the help and the concern! I will keep you posted.
OH AND I am changing the mobil 1 out! They put it in yesterday and I didn't really say much but I am putting my foot down now! It is my car and I want non synthetic oil in it for a few thousand miles! I got the rotella t and am changing the oil right now!
These guys are helping me A TON! I appreciate them, they are making sure it is done right! I HIGHLY recomend them! I know this will get worked out I just hope it is in time!
I will ask about the fuel. I did ask the tech again to make sure I gave the correct info and he said the injectors were at 80-81% duty cycle. They were debating over it yesterday about where they max out and such so I know it was high duty cycle.
I checked the coil packs, the battery is new, I will check the plugs, we did find the crank bolt was not in tight enough so that may be something. We shall see what happens.
A few more hours and I should have some more info.
Thanks for the help and the concern! I will keep you posted.
OH AND I am changing the mobil 1 out! They put it in yesterday and I didn't really say much but I am putting my foot down now! It is my car and I want non synthetic oil in it for a few thousand miles! I got the rotella t and am changing the oil right now!
I don't know about a few thousand miles but I would recommend for at least 500 miles to make sure that the rings seal properly... The funny thing is that I think I remember that Corvettes have Synthetic oil in from 0 miles and on...Then again they're not going to be pushing 700-800rwhp with it...Either way it seems like you definitely know your stuff and just keep going in the right direction...Usually it's the most obvious thing that's been staring you right in the face...
I'm not sure if this was mentioned earlier but I'm to lazy to go back and read, what is the AFR at and did you have a chance to pull a spark plug and check it out? If your making the boost, getting spark and fuel the power should be there No codes are comming up, misfire ect? You may want to have who ever is doing the tunning to check there wide band and make sure its reading accurate because who knows maybe its running rich.
No codes are comming up, misfire ect? You may want to have who ever is doing the tunning to check there wide band and make sure its reading accurate because who knows maybe its running rich.