Suspension & Brakes Theory, alignment, spring rates....

Extended top hats.........

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Old Dec 29, 2007 | 08:21 AM
  #1  
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Default Extended top hats.........

Talking about modified stock units.

Im curious as to how many people are interested in having their stock ones modified.

How much total shock travel, minus the bump stop length do dampers on hondas have? How much bump travel is setup in your configuration?

What kind of cost are people being charged to get this done? Is that cost fair?
GCs are ~$240 for 4, would like $125 be fair for 4 modified ones?

thanks for taking the time.


Modified by dfoxengr at 9:16 PM 1/2/2008
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Old Dec 29, 2007 | 09:58 AM
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Default Re: Extended top hats......... (dfoxengr)

the rear should not be extended that much.

A.) there is not need for it, no way in hell you are going to run out of travel even at the lowest ride height.

B.) that is a WHOLE lot of droop you are taking out of the rear, and that isn't a good thing at all.
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Old Dec 29, 2007 | 04:26 PM
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Default Re: Extended top hats......... (slammed_93_hatch)

oh i realize that, im just going off of what people said they wanted.
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Old Dec 29, 2007 | 05:03 PM
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Default Re: Extended top hats......... (dfoxengr)

so how much total travel is built into the dampers on most hondas? i havent ever measured one.
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Old Dec 30, 2007 | 11:42 AM
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Default Re: Extended top hats......... (dfoxengr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dfoxengr &raquo;</TD></TR><TR><TD CLASS="quote">so how much total travel is built into the dampers on most hondas? i havent ever measured one.</TD></TR></TABLE>
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Old Dec 30, 2007 | 11:56 AM
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Default Re: Extended top hats......... (dfoxengr)

it depends.

The jdm setups have far less then a say Koni, tockico, ect
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Old Dec 30, 2007 | 11:57 AM
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Default Re: Extended top hats......... (slammed_93_hatch)

can anyone add any numbers and models they have?
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Old Dec 30, 2007 | 05:22 PM
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Default Re: Extended top hats......... (dfoxengr)

my 3011's have around 110mm of shaft travel. That is differnt then the spss3 koni's, the koni sports, and most other's.

the 3011's are built to order
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Old Dec 30, 2007 | 05:59 PM
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Default Re: Extended top hats......... (slammed_93_hatch)

thanks for sharing.
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Old Dec 31, 2007 | 06:30 AM
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Default Re: Extended top hats......... (dfoxengr)

somebody vote.....
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Old Dec 31, 2007 | 02:11 PM
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Default Re: Extended top hats......... (dfoxengr)

Maybe there are some people who are on the fence about modifying their upper mounts, but aren't quite sure what exactly the modification entails, and what it does.
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Old Dec 31, 2007 | 02:13 PM
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Default Re: Extended top hats......... (PIC Performance)

gotcha:
The modification is done by welding in an extension tube that raises up the mounting point of the top of the shock rod. This effectively increases your bump travel by allowing the shock body to pass through the tophat a certain amount before bottoming out. It does also decrease the droop travel. But, what we are trying to accomplish is getting a good balance between the two, since they were both changed when you lowered your car.
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Old Dec 31, 2007 | 09:12 PM
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Default Re: Extended top hats......... (dfoxengr)

On my EG I have mine extended 1.5 in the front and 1.75 in the rear. The fronts just barely clear the hood. The car is lowered approx 1.75 inches and I had it done not just for the added travel up front but to put the strut piston in the center when the suspension's at rest. I've had the same Tokico R's on there since way back when they were cool.

I would consider having them done on my DA (same upper perches as the 88-95 Civic) but it depends on what suspension I end up putting on there. But if this thread goes the same way as every other HT startup business that I've seen, the prices will be bloated and I'll end up finding someone local that can do it for me.
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Old Dec 31, 2007 | 09:56 PM
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Default Re: Extended top hats......... (suspendedHatch)

well ive had my business running for 2.5 years now, but thats not what we're really discussing here.

thank you for the input about the top hats though.
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Old Jan 2, 2008 | 12:07 AM
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Default Re: Extended top hats......... (dfoxengr)

i would say just start fabbing em up....

when people purchase a set (of two or of four) have them return their stock ones and give em a lil discount for their cores maybe?

if the work is clean...and you hype it up around the boards...people will buy them

it's fairly easy to do (even if you don't have a welder you can run to a place and have them weld everything up for you) but they're cheap enough im sure people would buy them instead of busting their *** in the garage.
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Old Jan 2, 2008 | 06:49 AM
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Default Re: Extended top hats......... (dinko)

one thing though is i would like to offer the added lengths specific to someones setup. not just a generic length.

thanks for the ideas though
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Old Jan 2, 2008 | 11:32 AM
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Default Re: Extended top hats......... (dfoxengr)

well you guys know that you can just buy top mounts that already give you an inch of travel on all four corners. and anyways you dont even need that much extra travel in the rear. but it is nice to have it. well the honda mounts that we sell are better looking then the modified stock one and they are only 238 for all four with out shipping and tax. so i would go that route so if you want to sell the car with the stock stuff you can. plus we have them in red, orange, and black.
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Old Jan 2, 2008 | 11:43 AM
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Default Re: Extended top hats......... (dfoxengr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dfoxengr &raquo;</TD></TR><TR><TD CLASS="quote">gotcha:
The modification is done by welding in an extension tube that raises up the mounting point of the top of the shock rod. This effectively increases your bump travel by allowing the shock body to pass through the tophat a certain amount before bottoming out. It does also decrease the droop travel. But, what we are trying to accomplish is getting a good balance between the two, since they were both changed when you lowered your car.</TD></TR></TABLE>

Rebound travel does not change when lowering a car if a shock is used that has dimensions (body length and shaft length) identical to stock shocks.
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Old Jan 2, 2008 | 01:25 PM
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Default Re: Extended top hats......... (GroundControlTrevor)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GroundControlTrevor &raquo;</TD></TR><TR><TD CLASS="quote">well you guys know that you can just buy top mounts that already give you an inch of travel on all four corners. and anyways you dont even need that much extra travel in the rear. but it is nice to have it. well the honda mounts that we sell are better looking then the modified stock one and they are only 238 for all four with out shipping and tax. so i would go that route so if you want to sell the car with the stock stuff you can. plus we have them in red, orange, and black. </TD></TR></TABLE>

How come when I put 4 in the shopping cart it give the price as Estimated Total: $476.00

http://www.ground-control-stor.../CA=5
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Old Jan 2, 2008 | 01:33 PM
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Default Re: Extended top hats......... (89civicdx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 89civicdx &raquo;</TD></TR><TR><TD CLASS="quote">

How come when I put 4 in the shopping cart it give the price as Estimated Total: $476.00

http://www.ground-control-stor.../CA=5</TD></TR></TABLE>

Because you're ordering 4 pairs.

$119 is the price for a pair, so you only need 2 pairs to get 4 upper mounts.
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Old Jan 2, 2008 | 01:36 PM
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Default Re: Extended top hats......... (PatrickGSR94)

oh ok lol

might help to say that on the site
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Old Jan 2, 2008 | 01:54 PM
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Default Re: Extended top hats......... (89civicdx)

It does.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GroundControl.com &raquo;</TD></TR><TR><TD CLASS="quote">Description:
Billet aluminum upper mounts for most Honda Civic and Acura Integra. Relocates shock upward 24mm to allow extra suspension travel. ONLY FITS Ground Control coil-over kits. Includes custom bump stops, urethane stem bushings and grade 8.8 hardware with new Metric nuts and washers. Sold in pairs NOTE: These uppermounts require the reuse of some components that are included with your Ground Control coilover kit. These Hondamounts can ONLY be used in conjunction with a Ground Control kit.</TD></TR></TABLE>
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Old Jan 2, 2008 | 01:58 PM
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Default Re: Extended top hats......... (PatrickGSR94)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">

Rebound travel does not change when lowering a car if a shock is used that has dimensions (body length and shaft length) identical to stock shocks.</TD></TR></TABLE>

yes it does. think about it. you have 4" of total travel, 2 in bump and 2 in droop at ride height.

lower the car 2 inches, say that lowers the top shock mount by 1" due to the wheel rate. now you have 3" droop travel and 1" bump travel.
you effectively just shortened the whole package. it can now extend further than before though.

so if youre going to pay 238$ before shipping and tax for all 4, how is say 125$ for all 4 modified ones not a good deal if the quality of the extension/welding etc is good.

thats what im getting at.
its a much cheaper solution to the GC's
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Old Jan 2, 2008 | 02:02 PM
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Default Re: Extended top hats......... (PatrickGSR94)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PatrickGSR94 &raquo;</TD></TR><TR><TD CLASS="quote">It does.

</TD></TR></TABLE>


Oh I seeee

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Old Jan 2, 2008 | 02:10 PM
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Default Re: Extended top hats......... (dfoxengr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dfoxengr &raquo;</TD></TR><TR><TD CLASS="quote">

yes it does. think about it. you have 4" of total travel, 2 in bump and 2 in droop at ride height.

lower the car 2 inches, say that lowers the top shock mount by 1" due to the wheel rate. now you have 3" droop travel and 1" bump travel.
you effectively just shortened the whole package. it can now extend further than before though.

so if youre going to pay 238$ before shipping and tax for all 4, how is say 125$ for all 4 modified ones not a good deal if the quality of the extension/welding etc is good.

thats what im getting at.
its a much cheaper solution to the GC's</TD></TR></TABLE>

Yes, changing the upper mounts (moving the top of the shock rod higher) does decrease droop travel.

But I'm saying that simply lowering a car alone (changing springs and using stock-length shocks) does not change droop travel, because the shock still extends out to the same length as before the lowering springs were installed.

Actually I think I mis-read your post or something. Your last sentence about both droop and compression travel changing when lowering a car is what threw me off.
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