Ive already pmed my builders and im sure they already have a answer, im just looking to see if other people have experienced this or know ways to help the problem.

My 07 before being forged, cammed, supercharged, had the lame dead battery/alternator problem found through some threads. I got everything related to the starting and charging of the car under warranty, since then the car never got below 13.5v.

Upon my new motor setup, i now barely hold 12.2v with the hood closed, and stay at 13.5+ with the hood resting on the latch.

One of the things my builder told me was remove the rear weatherstrip piece to allow more heat out faster.

Is there anything else i can do before going in monday to keep my alternator from overheating an not charging the system, cruisin down a major road and having the car die is no fun. Ive thought about removing the plate over the intercooler, but wanna see if theres another method for keeping the alternator cool.

 

Did you do the Big Bolla's Intercooler mod V1.1 & V1.2??? If not I highly suggest you do so ASAP... Your alternator should NOT have issues... I have had zero issues with mine in Texas summer 5 'oclock traffic... It my need to be replaced with a G.M. (NOT after market) unit. But for sure do both of the Bolla's mods asap...

 

Ill have to show mod number 1 to my builder. Prolly wont bother with mod number 2 as of yet, dont need to make anymore power until someone comes out with a stronger 6l80.

I didnt see or read it in any of the mod thread he has, but would removing that procharger plate that hides the intercooler help keep everything else inside the engine bay cooler. thats my main concern atm, a new alt. not charging the system is no good.

 

I've heard people talking about their fuel pressure dropping as the car gets hot. They also talk about the DIC voltage dropping as the car gets hot. So I can assume these are by products of the ALT getting hot and not putting out as much voltage or consistent voltage. These guys did not know how to rectify the issue either.

 

I'd also suggest the Racetronix wiring harness that supplies the fuel pump with current straight from the alternator. This solved all my fuel pressure issues.

 

My fuel pressure stays consistent.

I ended up just removing the rear weather stripping and problem went away. Also drained the reservoir tank of dexcool and filled that with 2 bottles of water wetter and rest with water, and engine coolant temps dropped down to 180 in city.

After i get back from my trip and rack on the last 200+ break in miles(damn new motors), gonna do the bollas i/c mod #1 to help cooling as well. Shop owner was so impressed with it, said its gonna be routine now on all procharger installs.

 

Yep ,it works so well that they are useing it on the LS3 kits as if they had come up with the idea, and most of us know that's
They could have at least given the "CorvetteForum" credit for taking it from here!!!
What a bunch of rip offs...

 

Bringin this back from the dead, cause its a whole new heat issue.

Ok so i havent done the bollas mod yet, havent had time, dont have access to a lift, and pretty much afraid to start dismantling my baby.

For the mean time ive been ghetto and just popping the hood when i know im going for a good drive(30min or more), but whats killing me is trying to stay alive during long stop lights and traffic.

With the car cruisin at 190 coolant temps, ill come to a stop and itll climb to around 212, and with it being florida if im not moving a/c needs to come on, temps will then go up to 228 then back down to 217 then back up to 230 an yeah you get the point. Whats annoying me the most is the i just had gm replaced my battery and alternator along with all the wires dealing with both, and when im stuck idling my battery gauge drops from 14.2 to 11.8, and the DIC keeps plinkin off service charging system soon(reason why everything was replaced when the motor was stock).

Is there anything that can be done to remove heat to keep my alternator and battery from being "decharged" on idle, without purchasing a expensive *** hood. I have everything ready for a system to go in but i dont feel safe putting one in when my volts are dropping down to 11s without anything being on but the stock nav system.

 

FYI, I have a Ron Davis 57mm radiator with oil cooler, meziere electric water pump, and BB#1 mod. My car runs 70 mph with 180 coolant temp and 190 oil temp on 90 days. These temps both fall 10 when sitting in traffic with the ac blowing. On cooler days (70 degrees), the car runs 20 degrees cooler. The BB#1 mod will definitely improve your temps. It's a Saturday morning job, and worth cent it costs if you must have a shop do it for you. Good luck.

 

Can someone tell me what exactly are the BB mods???

Thanks

 

First mod requires cutting the skid plate frame to push the intercooler out at a further angle thus allowing air to run over the radiator, as of now the intercooler butts up against the radiator not allowing any airflow.

Second mod if memory serves me correct is turning the intercooler around shortening the amount of charge pipe used thus allowing the supercharger to spool a tad quicker and i think bollas said he gained an extra lb of boost.

I showed the shop that did my install these mods an now theyre gonna make it mandatory on the next c6 setups they do. im just to broke to pay for it, so gonna man up an try it myself.

 

Sunday project now!

 

The issue of your voltage dropping is from the under hood temps rising and the internal voltage regulator inside your ALT is heat soaking. As it cools down your output voltage will rise and the BAT will charge more consistent. I've seen this to be the case with my S/C car and many others.
You can use an aftermarket radiator, an oil cooler, the BB mod etc.. which will all help. As well, you can remove your rear hood seal and even put an aftermarket hood on the car to get some more heat out.

I'm also looking into an ALT fan to keep more constant airflow moving across the ALT and effectively lower its temp. I notice quite often that as the ALT gets hotter my fuel pressure drops lower. When it is cool outside I've seen fuel pressure as high as 70LBs. As for now with weather hot it will drop down as low as 52LBs while cruising. Although when the boost a pump kicks in the pressure will shoot up.

Good Luck!

 

I took off the weather stripping and now my hood starts flopping around over 30 mph. does anybody else have this problem.

 

Your hood shouldnt be flopping around at 30mph. I removed my weatherstripping the day after i had my d1 put in, and before when id ride with the hood popped an just rested on the latchs i would just drive around town and nothing, the car has even seen speeds greater then 160mph with the hood resting on latchs and nothing happened.

RE-ENTRY, yeah i know its the alt getting heat soaked. Even with all the mods done, i still dont see them helping enough when stuck in idle, why im tempted to buy the lingenfleter hood so some airflow gets in there, or just finding a slim line fan strong enough and small enough to mount somewhere by the alt. hell ill rig up a storm of computer case fans lol, prolly not.

 

Do you think the Vette-Air system would help this problem? It seems to push a lot of air thru the engine intake and compartment area.

Just thinking out loud...

 

I believe I have already given that credit, is this not enough?

http://forums.corvetteforum.com/show...3&postcount=26

 

Are you not the one who put my 2nd and 3rd mod down ?

http://forums.corvetteforum.com/show....php?t=1709678

I think this was your post...
I am not real sure where you have received your information, but automotive cooling fans are designed to do nothing more than pull heat out of the radiator. It is just a nice bonus that the fan blows on the motor. That half a square foot of real estate that you may have gained has done nothing.
I assume that 1/2 a square foot of real estate is helping you gain something now since it is now built into your kit .

You didn't give us credit , you are posting in someone else's post.
If you where addressing us "Members and the Corvette Forum" you would have started your own post.

 

Well Daniel,
I give you full credit!!! and I appreciate everything you've shared with your Corvette Brothers... Thanks a TON!!!

 

Havent done the bollas mod yet, another project took over sunday but its on the menu, and trust me big bollas, its being deemed the bollas mod in the shop for mine an future cars being done.

still trying to find your third mod. keep up the good work