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09-02-2008, 08:46 AM
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#1 |
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Project collector
Join Date: Mar 2006
Location: Sanderson, Fl
Posts: 700
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Newbe question
Hey guys,
I am new to this forum, just picked up a 56 3100. Having no knowledge of strait axle setups this truck has a setup that concerns me a little. It has a power rack and pinion and the steering column is connected directly to the rack that is attached to the strait axle. Wouldnt the up and down movement of the strait axle cause a proble for the steering column? Is this safe? Thanks, Steve |
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09-02-2008, 12:27 PM
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#2 |
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Registered User
Join Date: Dec 2002
Location: Cactus Patch So. Az
Posts: 4,749
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Re: Newbe question
Is the Rack & Pinion attached to the frame or the axle?
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09-02-2008, 12:41 PM
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#3 |
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Registered User
Join Date: Jul 2007
Location: Wapwallopen Pa
Posts: 412
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Re: Newbe question
To me it sounds like he is saying that the r&p is attached directly to the straight axle. If it is, id imagine there would be some type of telescoping shaft that goes from the steering column to the rack & pinion. Otherwise if you would hit any bump at all, the force would push the steering column/wheel right up into the drivers face.
Either way, Ive heard that a rack & pinion on a solid axle truck is a bad setup as there will be alot of bump steer. Got Pics???
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Chris 52 Chevy 3600 (3/4 ton) 5 window pickup -54 235 Inline 6 w/ Fuel Injection Conversion -Clifford 2/4bbl Aluminum Intake and Headers -1/2 ton front axle swap w/ 5lug disc brake kit -CPP Power Steering Kit Various pictures of my 52 Chevy 3600 Last edited by drummin89; 09-02-2008 at 12:43 PM. |
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09-02-2008, 03:24 PM
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#4 |
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Project collector
Join Date: Mar 2006
Location: Sanderson, Fl
Posts: 700
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Re: Newbe question
Here are some pics. It does not look like there is any type of telescoping shaft from the column to the rack.
There is a considerable amount of bump steer. What would you recommend I do? Revert back to the old setup? I really want to keep the power steering if possible. I dont have the money right now to add a mustang II setup either. ALL suggestions are greatly appreciated. Thanks, Steve |
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09-02-2008, 11:17 PM
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#5 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: Newbe question
I would go with a P/S kit from ccp or one of the others that uses a GM box in the 73-87 location. Bump steer is a fact of life with a straight axle and its made worse with the rack tie rods being at that angle. For $200-$300 you could have a modern GM setup and get rid of the rack.
Last edited by dwcsr; 09-02-2008 at 11:18 PM. |
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09-03-2008, 03:05 PM
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#6 |
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Registered User
Join Date: Jan 2007
Location: tacoma wa.
Posts: 1,037
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Re: Newbe question
the toyota 4x4 box make a clean swap! the one ccp offers using 73-87' chevy truck will rub if your tires have any width to them.
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09-03-2008, 03:23 PM
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#7 |
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Hollister Road Co.
Join Date: Apr 2005
Location: Houston
Posts: 6,131
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Re: Newbe question
What year toyota?
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09-04-2008, 05:58 AM
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#8 |
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Registered User
Join Date: Jan 2007
Location: tacoma wa.
Posts: 1,037
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Re: Newbe question
pre 85' toyota 4x4,the ones with solid front axle. i'm told some 86's will work also. same box no limit uses in their kits.
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09-04-2008, 12:14 PM
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#9 |
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polishing a turd
Join Date: Dec 2004
Location: houston, tx
Posts: 674
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Re: Newbe question
i don't see how there can be any bump steer caused by the tie-rods, with the rack mounted to the axle. the entire rack moves with the suspension, to there shouldn't be toe changes with suspension articulation from the tie rods, due to the fact the angle of the tie rods never changes with respect to the axle.
your problem is likely with the linkage to the rack. it looks like the linkage comes to the rack at an angle, so when the suspension compresses, the wheels will want to turn left, when it droops, it will turn the wheels right.
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59 chevy apache 31 4x4 - my project: http://67-72chevytrucks.com/vboard/s....php?p=8668512 53 buick special - straight 8 sled - blow through turbo 47 gmc - flatbed hot rod build 99 ford econoline e350 - 4x4 converted family roadtrip/overlanding rig AKA 'Monstervan' AKA 'Daddy-Van' Last edited by 1-ton of fun; 09-04-2008 at 12:16 PM. |
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09-06-2008, 02:23 PM
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#10 |
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Registered User
Join Date: Feb 2007
Location: TN
Posts: 164
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Re: Newbe question
it's interesting - that looks like R&P somebody home built.
what's interesting is that No Limit Engineering is actually selling a kit to put the R&P on our truck's straigt axles like that. you may want to take a look at their setup and some of the truck magazine articles about that installation. it might give some ideas about getting it better tuned. |
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