Solex Backing Plate Template?

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Skyman
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Solex Backing Plate Template?

Post by Skyman »

Does anyone have or know where to find a template for the backing plate for solex 44PHH carbs? Is anyone using the Borla TMW airbox on their roadsters?

Thanks!
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Re: Solex Backing Plate Template?

Post by jrusso07 »

I can trace you a cardboard template of the heat shield, if that is what you need. PM me if you want.
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Re: Solex Backing Plate Template?

Post by SLOroadster »

Are you looking for an ITG backing plate template, or something else. I can make you an ITG one since I have everything off the car at the moment.

Installing any sort of an airbox on a roadster is a serious pain. It will also require cutting something to get air into it. I see a law of diminishing returns kicking in pretty quickly with one.

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Skyman
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Re: Solex Backing Plate Template?

Post by Skyman »

I'm trying to do something like this, or actually this. If I do, I'll need a template to cut the holes etc.. The ITG backing plate would be awesome. PM me on what you want for your time and materials.

http://www.twminduction.com/airbox.htm" onclick="window.open(this.href);return false;
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Re: Solex Backing Plate Template?

Post by SLOroadster »

I can trace out my backing plate next week. I'm racing tomorrow so I can't get up to work on the car. Depending on what time I get home tomorrow afternoon I might be able to get up there Monday after work.

Like I said, an airbox would be a neat idea, but getting one to fit, and getting the air source to feed it are both pretty tricky. I've seen one solution but its not by any means pretty or elegant. Its likely functional, but thats about it.

Will
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Re: Solex Backing Plate Template?

Post by Gregs672000 »

Skyman wrote:I'm trying to do something like this, or actually this. If I do, I'll need a template to cut the holes etc.. The ITG backing plate would be awesome. PM me on what you want for your time and materials.

http://www.twminduction.com/airbox.htm" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;
Beautiful, isn't it? And it won't likely fit :cry: I've done a lot of measurements and there just isn't room in a Roadster for that without cutting out the inner fender. I've always come back to having to make my own, especially if you what to run velocity stacks. There are pics of my air box somewhere on the board. It is a one piece unit with stacks inside, hopefully with enough room in front of the stacks to not choke them down (pretty sure I'm good). I've had to move a lot of things around or got rid of things to make room for the cold air plumbing, including cutting the rad frame, shimming it forward just a bit, and to the passenger side. As Will said, it is a bit of work. I can't say objectively whether it makes any difference or not, but I like to think it does!

If you try to make your own or modify the TWM version, it may be best to run the short, fully radiused velocity stacks they sell (spendy but oh so nice!). It may make fitting a bit easier since the stacks won't be in the way when you attach the body of the box to the backing plate/carbs.

If you do get the TWM version to work, please show us how you did it!
:smt006
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Skyman
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Re: Solex Backing Plate Template?

Post by Skyman »

Gregs672000 wrote:
Skyman wrote:
If you try to make your own or modify the TWM version, it may be best to run the short, fully radiused velocity stacks they sell (spendy but oh so nice!). It may make fitting a bit easier since the stacks won't be in the way when you attach the body of the box to the backing plate/carbs.

If you do get the TWM version to work, please show us how you did it!
:smt006
I want to lose the long Mikuni stacks and go with the smaller radius stacks. I've seen some research that clearly shows the power difference in a short full radius stack. I've got some plans for a custom box made of aluminum sheeting. Attaching it to the backing plate is my challenge at the moment. That's why I need a backing plate template so I can make my measurements and start getting thing bended and welded.
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Re: Solex Backing Plate Template?

Post by spyder »

I would love to use the TWM airbox but it is 4.75 inches wide and my lower front clearance is around four. Are the Solex 44's shorter?
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Re: Solex Backing Plate Template?

Post by Skyman »

spyder wrote:I would love to use the TWM airbox but it is 4.75 inches wide and my lower front clearance is around four. Are the Solex 44's shorter?
No. Still just over 4". That's why I want to make one, or modify the TMW. Not sure how much material you could take off the lip of the TMW though.

This is close.
http://311s.org/phpBB3/viewtopic.php?f= ... ke#p108954" onclick="window.open(this.href);return false;
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Re: Solex Backing Plate Template?

Post by Alvin »

airbox/CAI on Gary's U20

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Re: Solex Backing Plate Template?

Post by fj20spl311 »

Maybe I an crazy....But if was going to design/install a cold air box, I would move the expansion tank to the other side and Block off the entire left side (bottom and engine side) with aluminum sheet with a rubber seal to the hood. You use a "flat" air filter in front of the grille support to filter the air going into the "air box" You would need to make a rubber seal between the air box and the backing plate that's attached to the carbs

I don't think there is any real advantage in ram air, but I could be wrong.
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Re: Solex Backing Plate Template?

Post by Gregs672000 »

Carbs extend at least two inches longer than the FI set up Gary has, which makes a HUGE difference. If you could shorten the length of the intake manifold, or do something to change the big rubber carb mounts we have to use to something thin you would open up a bit more room.

A welded box sounds great, as do the short stacks... Exactly what I would do. I'm envisioning a backing plate, held to the carbs using the short stacks, then a sealed box fitting over that (and able to slide in or drop down because the stacks are short and out of the way) that bolts or clips some way to the backing plate (I've always imagined using locating pins on a lip on the bottom of the backing plate that then locate the bottom of the air box, then securing it to the backing plate by clips on the top edge). The only reason I have not built a box that way is 1) I don't know how to weld and 2) I'm too cheap to pay that much for their velocity stacks!

I hope you do it, and post some cool pics!
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Re: Solex Backing Plate Template?

Post by Alvin »

backing plate?
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Re: Solex Backing Plate Template?

Post by notoptoy »

Is there any flex in that? It seems like that solid box would fatigue and tear over time, as there looks to be no movement with the engine??
"When all else fails, force prevails!" Ummm, we're gonna need a bigger hammer here.

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Re: Solex Backing Plate Template?

Post by Skyman »

fj20spl311 wrote:I don't think there is any real advantage in ram air, but I could be wrong.
http://www.ehow.com/facts_4857195_benef ... ntake.html" onclick="window.open(this.href);return false;

This is just one of the many sites pulled up doing a search. I think there is plenty of evidence that a cold air intake provides benefit. Plumbing it to the front of the car presents some challenges.
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