91 Mini Tubbed Mustang Coupe

[redfirepearlgt]

Just out of curiosity what kind of side load does that setup place on the crank and associated bearings and seals? How much tension will be on the belts or is that why you are running a timing belt that can be run with little to no tension on it?

[Hensley32]

I run sliders on my kirksey with no problems. Bracketed to my cage and isn't going anywhere

[2Fast4You]

Just out of curiosity what kind of side load does that setup place on the crank and associated bearings and seals? How much tension will be on the belts or is that why you are running a timing belt that can be run with little to no tension on it?

The pump itself will have little to no tension on it.

[redfirepearlgt]

The pump itself will have little to no tension on it.

So how is the pump regulated? What pressure differential will you attempt to maintain or is it preset based on engine displacement and RPM when you order the unit? I understand the concept just curious at what point too much vacuum is too much and starts to hamper the upward stroke of the piston cycle. In my mind too much vacuum effect on the piston up stroke would be like sticking your finger over the end of a syringe (without the needle in it) and trying to pull up the plunger. Thanks in advance for the 411.

[2Fast4You]

So how is the pump regulated? What pressure differential will you attempt to maintain or is it preset based on engine displacement and RPM when you order the unit? I understand the concept just curious at what point too much vacuum is too much and starts to hamper the upward stroke of the piston cycle. In my mind too much vacuum effect on the piston up stroke would be like sticking your finger over the end of a syringe (without the needle in it) and trying to pull up the plunger. Thanks in advance for the 411.

It has a built in adjustable regulator, you are correct about it being preset from them based as you mentioned. I believe we are anticipating 15" vacuum.

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[redfirepearlgt]

Would be fun to see it on the dyno and make a few pulls at different vacuum settings to see the effects.

[2Fast4You]

Would be fun to see it on the dyno and make a few pulls at different vacuum settings to see the effects.

Yes it would have, unfortunately I wasn't in the position to acquire it before hand.

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[2Fast4You]

I'm sure there would be a way to measure crankcase pressures to test its effectiveness as well, any ideas?

[redfirepearlgt]

I'm sure there would be a way to measure crankcase pressures to test its effectiveness as well, any ideas?

You could T in a vacuum gauge on the bottom end where the vacuum pump will be connected to the lower side. A mechanical version may work, but not sure being the atmosphere will likely be heavy with oil vapor and mist. Another option would be to obtain an electrical vacuum gauge but you're looking at $250 for the only model I could find. A vacuum boost gauge that reads vacuum down to 30inches would also work. They are a bit more reasonable as they are in higher demand with regard to one with a sending unit vice the mechanical option if you have to go that route.

[2Fast4You]

You could T in a vacuum gauge on the bottom end where the vacuum pump will be connected to the lower side. A mechanical version may work, but not sure being the atmosphere will likely be heavy with oil vapor and mist. Another option would be to obtain an electrical vacuum gauge but you're looking at $250 for the only model I could find. A vacuum boost gauge that reads vacuum down to 30inches would also work. They are a bit more reasonable as they are in higher demand with regard to one with a sending unit vice the mechanical option if you have to go that route.

I will contact the smog pump manufacturer and see if they have any recommendations on measureing the vacuum draw and where to do it accurately. It is now installed by the way.

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[Maximus]

Looking good!

[2Fast4You]

Thanks Craig, a long way to go still.

[2Fast4You]

Still making progress

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[draggin50]

Looks like you have plenty of room to work!!!!

[2Fast4You]

Looks like you have plenty of room to work!!!!

I like to keep it as clean and organized as much as possible Brian.

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[k062693w]

Still making progress

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That's a really pretty Green Shayne !!!

Looks Good ...

[Walter]

That thing would look badass if it was dark metallic gunmetal!

[draggin50]

Or even a shade of primer!

[Maximus]

DUDE!! I feel your pain with the Fuggin Bikes!!!!!

[2Fast4You]

DUDE!! I feel your pain with the Fuggin Bikes!!!!!

That's for sure! Just had to replace both inner tubes on my daughters, rear tire and inner tube on my sons and the rear inner tube on mine, what the heck!