TPIS Mini Ram Throttle Cable Installation Advice
Thread Starter
Melting Slicks
Joined: Oct 2004
Posts: 2,742
Likes: 31
From: "southern" Illinois
TPIS Mini Ram Throttle Cable Installation Advice
I need some help from those who have experiece installing a TPIS mini ram on a C4, particularly a 89 Corvette with automatic trans. I have begun a mock-up lay out on an extra engine I am putting together, and have discovered some problems that I'm sure are others have experienced.
When setting up the miniram with their TPIS 52mm throttle body, I see that the throttle cable end is different where it mounts to the throttle body. This is not a problem because I have complete 88 throttle cable asy. with bracket and all three cables (throttle, cruise, trans) available with bracket that has the correct end.
The main problem I see is that neither throttle bracket assembly (88 or89) will place the cables at good angle to work the throttle asy. even after some modification.
So, before I begin to modify brackets can any one tell me how they have address this problem. Frankly, I don't see how the throttle cable can ever be placed in a good position for operation - due to #1 & #3 injectors.
Any help would be greatly appreciated.
Thanks again, kvette89 - Keith
When setting up the miniram with their TPIS 52mm throttle body, I see that the throttle cable end is different where it mounts to the throttle body. This is not a problem because I have complete 88 throttle cable asy. with bracket and all three cables (throttle, cruise, trans) available with bracket that has the correct end.
The main problem I see is that neither throttle bracket assembly (88 or89) will place the cables at good angle to work the throttle asy. even after some modification.
So, before I begin to modify brackets can any one tell me how they have address this problem. Frankly, I don't see how the throttle cable can ever be placed in a good position for operation - due to #1 & #3 injectors.
Any help would be greatly appreciated.
Thanks again, kvette89 - Keith
Race Director
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From: Database Error Indiana
Burning Brakes
Joined: May 2004
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From: Athens Ohio
I am in the process of installing a miniram on my 86. I bought it used from another person who had it installed on a 89. When I first looked at the throttle cable brackets, I didn't see how they could work. They do put the throttle cable in a strange position. It mounts on the top on the MR and puts the cable a a steep angle. It will work though. The cruse control cable mounts in the bottom bracket. My car has a cable controlled transmission. The brackets I had didn't have a provision for this. I took my old TPI bracket and cut off the mount and welded it to the lower bracket. If you transmission is electronic controlled you won't need to worry about it.
Thread Starter
Melting Slicks
Joined: Oct 2004
Posts: 2,742
Likes: 31
From: "southern" Illinois
89 - 96 verses 84-88 cable asy.
I'd just like to pass along a quick "thank you" for replying to my post. I really appreciate the advixe and help.
I'm curious, has anyone mounted a Mini Ram using the 89 style throttle cable (89-96 eccentric style throttle cable holder asy. at throttle body vs. stud type). If so, do you mount the cable on the side of mini ram, or bring it in from the top at an angle with the 89-96 type cable end?
Just curious if there is any advantage to either type.
Thanks,
kvette89
I'm curious, has anyone mounted a Mini Ram using the 89 style throttle cable (89-96 eccentric style throttle cable holder asy. at throttle body vs. stud type). If so, do you mount the cable on the side of mini ram, or bring it in from the top at an angle with the 89-96 type cable end?
Just curious if there is any advantage to either type.
Thanks,
kvette89
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
How much free play is their in the cable?
For the supercharger tubing, I had to lose the bracket on the side and switched to a top bracket. I'm using a BBK 58MM throttle body with the later style 'barrel' cable. I put a new cable in today, but I have a TON of slack in the cable. I can't get more than 50% throttle.
-- Joe
For the supercharger tubing, I had to lose the bracket on the side and switched to a top bracket. I'm using a BBK 58MM throttle body with the later style 'barrel' cable. I put a new cable in today, but I have a TON of slack in the cable. I can't get more than 50% throttle.
-- Joe
Le Mans Master
Joined: Feb 2005
Posts: 5,146
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From: The Motor City
How much free play is their in the cable? For the supercharger tubing, I had to lose the bracket on the side and switched to a top bracket. I'm using a BBK 58MM throttle body with the later style 'barrel' cable. I put a new cable in today, but I have a TON of slack in the cable. I can't get more than 50% throttle. -- Joe
It was the bottom one (on the side of intake) that I re-drilled further back (approx. 1" almost in the corner of the bracket !). It was the only way to get the TV' cable to work properly (cruise could have been adjusted by the multiple holes available on other end).
Could the BBK's cam position be different than the stock type TB's?
My cable is the original (90), the only other thing I could think is if the new cable the same in length as the original?
Last edited by mseven; Apr 24, 2008 at 07:52 AM.
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Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
The top one on mine is slotted and w/this tb etc. it is approx.in the middle, but I set it to have very little slack. I could set it almost anywhere in the slotted area and it will still open the T blade 100%. The other thing I did was change the angle of the top (where the cable goes through). Bending the tab back on the top bracket (where the cable goes through, will also take up some cable slack (by making the cable come up at the cam), and also makes the rest of the cable from the bracket back (towards the firewall) sit closer to the fuel rail. ( weird to describe, hopefully that makes sense).
It was the bottom one (on the side of intake) that I re-drilled further back (approx. 1" almost in the corner of the bracket !). It was the only way to get the TV' cable to work properly (cruise could have been adjusted by the multiple holes available on other end).
Could the BBK's cam position be different than the stock type TB's?
My cable is the original (90), the only other thing I could think is if the new cable the same in length as the original?
It was the bottom one (on the side of intake) that I re-drilled further back (approx. 1" almost in the corner of the bracket !). It was the only way to get the TV' cable to work properly (cruise could have been adjusted by the multiple holes available on other end).
Could the BBK's cam position be different than the stock type TB's?
My cable is the original (90), the only other thing I could think is if the new cable the same in length as the original?
As far as the cam on the BBK.. Good question! Any chance of getting you to take a good size pic of yours, closed, and fully open? I'll know for sure..
-- Joe
Le Mans Master
Joined: Feb 2005
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From: The Motor City
motor is out the car so here's some TB pics. can you tell from this view?
(stainless allen screw is the centerline of the shaft for the blade)
(stainless allen screw is the centerline of the shaft for the blade)
Last edited by mseven; Apr 24, 2008 at 09:15 PM.
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
I think what I need to do is is measure how much cable 'pull' in inches mine is vs someone else with a known good pedal, to determine if its a bent pedal or another issue.
-- Joe
Safety Car
Joined: May 2006
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From: Salem NH
Thank you!
Your pix are identical to mine. So I think its safe to rule out the TB.
My bracket s identical as well, bolted in the same spot.
So my problem is either the pedal is bent from using the '87 cable on the side bracket (the cable was very tight, maybe it bent the bracket? I had it connected to the cruise-control post), or my cable is made wrong and is too long.
On a closed throttle position, how far away from the firewall should the pedal be?
-- Joe
Your pix are identical to mine. So I think its safe to rule out the TB.
My bracket s identical as well, bolted in the same spot.
So my problem is either the pedal is bent from using the '87 cable on the side bracket (the cable was very tight, maybe it bent the bracket? I had it connected to the cruise-control post), or my cable is made wrong and is too long.
On a closed throttle position, how far away from the firewall should the pedal be?
-- Joe
Le Mans Master
Joined: Feb 2005
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From: The Motor City
Thank you! So my problem is either the pedal is bent from using the '87 cable on the side bracket (the cable was very tight, maybe it bent the bracket? I had it connected to the cruise-control post), or my cable is made wrong and is too long. On a closed throttle position, how far away from the firewall should the pedal be? -- Joe
Last edited by mseven; Apr 24, 2008 at 10:04 PM.
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
You're welcome, and that seems to narrow it down. I have no idea how far from the floor the pedal is when all the way up (or closed throttle). I seem to remember about an 1'' or less of visible cable at the top, and that the pedal has almost no additional travel available (if pulling up on it). I could tell it wouldn't hold the blade open, so I set it as near the top as possible (using the cable bracket on intake, including some tweaking as mentioned earlier), that way the pedal wouldn't be buried in the carpet at wot . If you want, I can take a couple of pics. tomorrow of the pedal/bracket and cable ***. when I'm in the garage working on it.
Thanks for the offer. Not sure how much the pics will help though with the motor out as the cable won't be in place on the TB. Hrmm. Not sure how to figure this out without getting my hands on another car.
I have no problem replacing the pedal if thats really it, just. Need to know for sure. I can't drive the car though as is.
It must be the pedal though..
-- Joe
Le Mans Master
Joined: Feb 2005
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From: The Motor City
Joe, another thought if it did not get bent/damaged, is the actual pedal bracket ***. used in the 90 same as the 87 ?
If you decide you need some additional pics. let me know or feel free to PM. Mick
If you decide you need some additional pics. let me know or feel free to PM. Mick
Safety Car
Joined: May 2006
Posts: 4,290
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From: Salem NH
Never saw a post of someone coming back saying 'wtf, that didn't work!'.
The blower plumbing amost rubs the injector, so it sorta forced me to do the cable 'the right way' by using the top bracket an the late style cable. Before, I had the '87 cable in the side bracket connecting to the post that normally goes to cruise control. (when the motor was naturally aspirated).
What a pain in the ***..
-- Joe
