Throttle Stop Question

navamotorsports · 07-20-2011, 08:32 AM

Has anyone made a home made throttle stop and can you post pictures or possibly give share the idea as to how to make one. I know I can purchase either an electric or an air throttle stop. My car is running really tight I believe the best it has run has been a 10.75 and I would like to race in the Hot Rod class in San Antonio, Tx come September any help would be appreciated. Thank You.

Bob Verwold · 07-20-2011, 09:18 AM

At your ET I think I'd just do it with weight....

Bill Baer · 07-20-2011, 09:43 AM

I agree with Bob, weight is simpler and more predictable when your that close to the index.
I have a home made, inline air (Co2) cylinder stop and it's a pain in the *** because there are a lot of variables stroke length, stroke time, the amount of resistance,in the carb linkage, Co2 Pressure, how solid the throttle pedal stop is, how much stretch and slack in in the throttle cable.
Ballast is the simplest and cheapest but there a couple of other ways too, Moroso markets a fixed stop and there's some guys selling a restrictor plate system which would work too also if you using a vacumn secondary holley or demon you can put a stop on the vacumn motor.
But if your determined to build you own in line stop contact me and I will help you with it.( But I can almost guarantee you, at some point, it will drive you nuts!)

THE LEGEND · 07-20-2011, 10:21 AM

Years ago I made a bracket that bolted to the back carb bolt, I then took a cariage bolt ground the end flat and ran it through the brack with a jam nut on both sides. The carb linkage would hit the bolt keeping it from opening all the way. It was good for about 2 tenths in the 1/8th mile.

I think Moroso made something similar for a while. Don't know if they still do.

Chip

Robbie Draughon · 07-20-2011, 01:14 PM

MOR-65042 is the part# about $27.00 retail

rob7181 · 07-21-2011, 08:22 AM

I have made a couple for dominators and have slowed my car up as much as 5 tenths. A couple of buddies are using the EZPLATE system to slow their cars up. Its a little pricey but, evidently very adjustable.

Mickey Whaley · 08-02-2011, 02:15 PM

Put some weight in and shift it way early

FrankM · 08-05-2011, 01:40 PM

I'm in the same situation running 10.7x and looking to set up for HR & S/ST. Are you guys suggesting to use weight or mechanical stop just because it's a cheap way or are throttle stops not consistent when only taking out 2 tenths?
I already have a Mega 85 and just need a stop, also looking for your suggestions.

Bill Baer · 08-09-2011, 01:32 PM

Frank
Weight is not only cheap it's pretty predictable the solid stop also is inexpensive and they do work. Their only achellies heel is you can't shut them off if the track gets slick. When you get it close +/-.02 you can adjust that with the oil level but you got to be careful you don't want to overfill it and get the oil foaming 1/2 qt one way or the other will provide you with some adjustment. get a couple of spare filters.

HR9121 · 08-09-2011, 01:47 PM

I'm in a similar situation and thinking of trying the ez-plate system. I've found that my car is not quite as predictable as I would like only killing 3 to 4 tenths. The stop is only activating for a few fractions of a second so not much variance there.

07-20-2011, 08:32 AM	#1
navamotorsports Junior Member Join Date: Aug 2009 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Throttle Stop Question Has anyone made a home made throttle stop and can you post pictures or possibly give share the idea as to how to make one. I know I can purchase either an electric or an air throttle stop. My car is running really tight I believe the best it has run has been a 10.75 and I would like to race in the Hot Rod class in San Antonio, Tx come September any help would be appreciated. Thank You.

07-20-2011, 09:18 AM	#2
Bob Verwold Senior Member Join Date: Jul 2007 Location: Fayetteville Ohio Posts: 656 Likes: 0 Liked 0 Times in 0 Posts	Re: Throttle Stop Question At your ET I think I'd just do it with weight....

07-20-2011, 09:43 AM	#3
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	Re: Throttle Stop Question I agree with Bob, weight is simpler and more predictable when your that close to the index. I have a home made, inline air (Co2) cylinder stop and it's a pain in the *** because there are a lot of variables stroke length, stroke time, the amount of resistance,in the carb linkage, Co2 Pressure, how solid the throttle pedal stop is, how much stretch and slack in in the throttle cable. Ballast is the simplest and cheapest but there a couple of other ways too, Moroso markets a fixed stop and there's some guys selling a restrictor plate system which would work too also if you using a vacumn secondary holley or demon you can put a stop on the vacumn motor. But if your determined to build you own in line stop contact me and I will help you with it.( But I can almost guarantee you, at some point, it will drive you nuts!) __________________ Bill Baer 3391 SC, 339B SC, QR Last edited by Bill Baer; 07-20-2011 at 09:54 AM.

07-20-2011, 10:21 AM	#4
THE LEGEND VIP Member Join Date: Aug 2002 Location: Fayetteville, n.c. Posts: 1,411 Likes: 0 Liked 1 Time in 1 Post	Re: Throttle Stop Question Years ago I made a bracket that bolted to the back carb bolt, I then took a cariage bolt ground the end flat and ran it through the brack with a jam nut on both sides. The carb linkage would hit the bolt keeping it from opening all the way. It was good for about 2 tenths in the 1/8th mile. I think Moroso made something similar for a while. Don't know if they still do. Chip

07-20-2011, 01:14 PM	#5
Robbie Draughon Junior Member Join Date: Jul 2007 Location: Fayetteville, NC Posts: 72 Likes: 14 Liked 26 Times in 3 Posts	Re: Throttle Stop Question MOR-65042 is the part# about $27.00 retail __________________ SS/AM 2917

07-21-2011, 08:22 AM	#6
rob7181 Junior Member Join Date: Mar 2011 Location: Maryland Posts: 42 Likes: 0 Liked 1 Time in 1 Post	Re: Throttle Stop Question I have made a couple for dominators and have slowed my car up as much as 5 tenths. A couple of buddies are using the EZPLATE system to slow their cars up. Its a little pricey but, evidently very adjustable.

08-02-2011, 02:15 PM	#7
Mickey Whaley VIP Member Join Date: Dec 2006 Posts: 1,220 Likes: 0 Liked 1 Time in 1 Post	Re: Throttle Stop Question Put some weight in and shift it way early

08-05-2011, 01:40 PM	#8
FrankM Junior Member Join Date: Jan 2009 Location: Columbus, OH Posts: 97 Likes: 0 Liked 2 Times in 1 Post	Re: Throttle Stop Question I'm in the same situation running 10.7x and looking to set up for HR & S/ST. Are you guys suggesting to use weight or mechanical stop just because it's a cheap way or are throttle stops not consistent when only taking out 2 tenths? I already have a Mega 85 and just need a stop, also looking for your suggestions.

08-09-2011, 01:32 PM	#9
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	Re: Throttle Stop Question Frank Weight is not only cheap it's pretty predictable the solid stop also is inexpensive and they do work. Their only achellies heel is you can't shut them off if the track gets slick. When you get it close +/-.02 you can adjust that with the oil level but you got to be careful you don't want to overfill it and get the oil foaming 1/2 qt one way or the other will provide you with some adjustment. get a couple of spare filters. __________________ Bill Baer 3391 SC, 339B SC, QR Last edited by Bill Baer; 08-09-2011 at 03:55 PM.

08-09-2011, 01:47 PM	#10
HR9121 Live Reporter Join Date: Jan 2011 Location: New Bern, NC Posts: 3,353 Likes: 112 Liked 2,869 Times in 641 Posts	Re: Throttle Stop Question I'm in a similar situation and thinking of trying the ez-plate system. I've found that my car is not quite as predictable as I would like only killing 3 to 4 tenths. The stop is only activating for a few fractions of a second so not much variance there. __________________ James Williamson W200 J/SA