[Valkyrie5.7]

I think with selling something that's low volume in a niche market, your reputation is all you have. It seems like your carb setup almost makes them as specialty a piece as the top casting itself. So leaving a complex carb setup (something that is a dying art in and of itself) to a buyer spending money under the pretense of "ease of use" sounds like a lot of a risk.

I'd at the very least include a primer in the instructions giving a brief explination of why you need to make the exact modifications to the specific carb in regards to design and volume. Include the same text on the site next to the product that only comes with carb and top casting. With how fast word travels in this internet world, you should think about covering all your bases.

I think the idea is great though! Beautiful execution and an innovative way to cover a market that needs a product. I can't count how many tunnel ram setups I see that are for eye candy alone.

[UPandComing]

i would suggest selling the carbs with the top piece as a kit and make sure the carbs are tailored to each customers application then you could get the carbs at a low price as a dealer and do the mods which probably dont take long if you know what you are doing, all u need is the specs from the customer on the engine so you can set it up and sell as a package deal and still turn a nice profit

[68NovaSS]

Edited two posts. Commercial marketing links to the OP's site and pricing proposals aren't allowed. We do have free classifieds and PM's can be used as well.

[matts37chev]

Originally Posted by ap72

Why not divide it into "8 plenums" and just use it with carbs that have equal venturis and a mechanical linkage (along with 2 accelerator pumps and 4 corner idle etc). Essentially you would create an IR system from 2 4bbl holleys, which could REALLY make an improvement down low. Tuning would be easier than it is right now as well since you could tune each cylinder individually and there wouldn't be an uneven mix of cylinder pairings.

you could also try altering your cam timing on each lobe to compensate for the firing order, but that would take more R&D and $$$ than I think you would want to invest for a street application.

I have read this thread before, and I just reread it, and it really got me thinkng

what would happen if I only used the bottom half of my T-ram and a carb spacer to mount the throttle body EFI ????

would this make better throttle response?

or am I just trying to re-invent the wheel

[rsfyj]

thinking out of the box is healthy and usually produces new tech that we can all use. go getem

[L79vette]

Originally Posted by matts37chev

I have read this thread before, and I just reread it, and it really got me thinkng

what would happen if I only used the bottom half of my T-ram and a carb spacer to mount the throttle body EFI ????

would this make better throttle response?

or am I just trying to re-invent the wheel

With your TBI, you should be better off mounting them on the normal plenum. With TBI, you get excellent atomization and distribution, even with the large plenum.

Atomization and distribution is the key to driveability - that is why I divided up the plenum. With carburetors, you need velocity through the venturis to get the metering to be correct at low RPM. But with TBI, the computer calculates the injector pulse width based on MAP and RPM - you don't need velocity through the throttle body to meter the fuel.

All that said, I have not built what you are talking about, so if you do it, let us know how it works out!

[Valkyrie5.7]

Originally Posted by L79vette

With your TBI, you should be better off mounting them on the normal plenum. With TBI, you get excellent atomization and distribution, even with the large plenum.

Atomization and distribution is the key to driveability - that is why I divided up the plenum. With carburetors, you need velocity through the venturis to get the metering to be correct at low RPM. But with TBI, the computer calculates the injector pulse width based on MAP and RPM - you don't need velocity through the throttle body to meter the fuel.

All that said, I have not built what you are talking about, so if you do it, let us know how it works out!

I don't claim to be an expert, but I'm sure that I read that the reason why all TBI engines came stock with some sort of swirl function in the intake track (IE in the bowls of the heads on chevys) is because TBI produces such poor atomization?

[L79vette]

Originally Posted by Valkyrie5.7

I don't claim to be an expert, but I'm sure that I read that the reason why all TBI engines came stock with some sort of swirl function in the intake track (IE in the bowls of the heads on chevys) is because TBI produces such poor atomization?

In comparison to port injection, yes. But TBI atomizes way better than a carburetor, especially at low airflow. Fuel injection does not depend on airflow through the venturi to draw out and atomize the fuel, so the atomization is equally good across the whole range of airflow.

Here is a link to a statement by Jim McFarland, who knows as much about mixture quality as any living human:
http://www.maxchevy.com/columns/mcfa...farland-1.html

Port injection runs at 50-60psi fuel rail pressure, while TBI runs at 12-15psi. Plus with the injector next to and pointed directly at the intake valve, port injection does not give the fuel the opportunity to drop out of suspension while moving through the manifold. So with port injection you can set things up so the fuel evaporates at just the right time.

[Valkyrie5.7]

Originally Posted by L79vette

In comparison to port injection, yes. But TBI atomizes way better than a carburetor, especially at low airflow. Fuel injection does not depend on airflow through the venturi to draw out and atomize the fuel, so the atomization is equally good across the whole range of airflow.

Here is a link to a statement by Jim McFarland, who knows as much about mixture quality as any living human:
http://www.maxchevy.com/columns/mcfa...farland-1.html

Port injection runs at 50-60psi fuel rail pressure, while TBI runs at 12-15psi. Plus with the injector next to and pointed directly at the intake valve, port injection does not give the fuel the opportunity to drop out of suspension while moving through the manifold. So with port injection you can set things up so the fuel evaporates at just the right time.

That makes sense. Thank you for the clarification and the reading material

[L79vette]

Got some new dyno results on an engine with more cam and heads than the Goodwrench stuff I posted before. We made +20lb-ft or more than the RPM from 2000 to 3200RPM, and beat it everywhere except the very top of the rev range. Very pleased, as the RPM is nearly unbeatable in every test on mild engines.

[painted jester]

Very interesting , I have 4 Weiand tunnel rams, among others! But you don't sell the top plenums separat from the Weiand bottom ! So if I modified the tops for track use on different configurations I would need to buy whole intakes from you or if a top plenum was damaged in a wreck or say a carb fire and damage happened I cant buy a replacement top??

Your on a lot of auto web sights pushing this product, I don't see how Hotrodders is letting you get away with this when we other members cant even mention on a thread we have a used fender some one needs and are told to P.M. or put it in our classifieds!!!!!! Who do you kiss to run this advertising!

All your posts on hotrodders are on your product and your only thread is on your product that tells me your only interest on hotrodders is free advertising of your product!!!!!!!!!!!!!!!!

Jester

[cobalt327]

IANAL, but I don't think he's actually broken the Hotrodders Bulletin Board Guidelines. His first post was edited, but that's been about it. He hasn't been here for nearly a year...

[painted jester]

Originally Posted by cobalt327

IANAL, but I don't think he's actually broken the Hotrodders Bulletin Board Guidelines. His first post was edited, but that's been about it. He hasn't been here for nearly a year...

Cobalt: LOL Whats IANAL LOL?

Yes its old ! I was on another thread and saw his Add was posted and bellow that thread was this thread; so I posted on it, (my thoughts)! What this guy got was free advertising that would cost big money for you or I or anyone else to do If we had a brain storm modification of a product! He has a captive audience on this sight! It just struck me as wrong!

Jester

[painted jester]

Cobalt:

google "Testimonials - Real Street Ram" to see a Hotrodders testimonial!!!!!!

There are three testimonials on this company's web sight They are all Emails except for this one that is cut and pasted on their web sight, From a hotrodders post on this thread! It just strikes me as wrong! I wonder if Mr fix it knows?


/attachment.php?attachmentid=70917&stc=1&d=13594111 220716[/url]

Jester

[cobalt327]

IANAL = "I'm not a lawyer..."

I see where he's all over the 'net w/it, yeah. But as far as him violating the policy here, I'm not sure he has- but one way to bring it to the attention of the powers that be is to hit the 'report post' icon and see what they'll do about it.

Mr fix it might even be a sock puppet.