mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 10:13 a.m.

I'm back in town after the summer. The Accord fired right up. The idle was wonky for about 10 minutes but settled down and things are great. I love this crap box so very much. Time to work on it!

Stock hood weighs 33.5 lbs on my crappy scale. 

Aluminum hood from the Hybrid is 18.5 for a nice round savings of 15lbs. 

It acutally lines up well (it wasn't latched or bolted on here, it looks better pressed down)........

But it doesn't fit at the back. It's too short. 

The tape measure tells me that the stock hood is 44 inches from front to back and the hybrid hood is 43. And the hinges don't fit, either in shape or having the bolt holes line up. What I don't know is why. Is this a sedan/coupe thing and grabbing a sedan cowl and hinges will make it work? Is it a hybrid/non hybrid thing and I'm going to need to try and chase down another hybrid to grab the parts? Are the sedan and coupe just fundamentally different enough that I can't make it work with stock pieces? Is is a facelift thing? Could I change ALL the front sheet metal and have it work? For a potential 15 lbs in savings it's worth it to try and chase the answer down. 11.5 lbs from the beam, another 15 from the hood, and there is an easy 10lbs or more in the battery. If I can get all of that done it will be 37.5 lbs from the front of the car. That's pretty huge. 

 

bobzilla
bobzilla MegaDork
8/8/18 10:19 a.m.
mazdeuce - Seth said:

That's pretty huge. 

 

TWSS

sleepyhead
sleepyhead Dork
8/8/18 10:22 a.m.

Or you could remove the plastic bit that's making it look too short.  It's known with the TL with helping reduce coolant temperatures (look up "TL Diet Ultimate Cooling Mod)... although, I guess that doesn't fix the hinges issue

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 10:26 a.m.

In reply to sleepyhead :

I need to go wander around the junk yard. Take some measurements. Stuff. 

Woody
Woody MegaDork
8/8/18 11:47 a.m.
mazdeuce - Seth said:

 

Stock hood weighs 33.5 lbs on my crappy scale. 

 

 

 

It's important to note how much your scale looks like a vintage Honda emblem.

 

It's good to have you home again.

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 2:23 p.m.

In reply to Woody :

Thanks, it's good to be using wrenches again, even if it's not accomplishing much. laugh

I was putting dishes away today and it occurred to me that we have a food scale what we never use that gets in my way. The Mazda2 always impressed me with it's attention to weight in every little piece without (mostly) feeling too cheap. Same philosophy they use in the new Miata. Consider every piece and as the Nelsons say, 16 oz make a pound. 

Sun visors. Both have lighted mirrors and slidey bits. They weigh 1lb 11oz each. Over three pounds way up high. I need at least a drivers visor for driving stuff, and probably a passenger one so my passengers don't hate me, but I don't need three pounds of them. Something to think about. 

I've often wondered how heavy power mirrors really are. These are a shade over three pounds each. I think I'm going to dissect one the next time I go to the junkyard and see where the heavy bits are. 

The rear speakers look heavy but they're only a hair over a pound each. They also kind of suck sound wise. I should probably run rear speakers as long as I have rear passengers, which will be a while. 

Grilles are light. 

And the thing I really wanted to take out, the suspended mass damper from the back shelf. We'll have to see if things get ringy back there. It looks heavier than a pound, but it's only barely. Every pound I can lose for free is a good pound. 

 

klodkrawler05
klodkrawler05 Reader
8/8/18 2:32 p.m.

Move the mirrors inside mounted on the A pillars, weight moved closer to the center and less drag!

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 2:40 p.m.

In reply to klodkrawler05 :

That has crossed my mind. Not 100% sure what the inspection place or the local police would say about it. Cleaning up the aero on the car is on the list. 

TED_fiestaHP
TED_fiestaHP Reader
8/8/18 3:08 p.m.

https://www.pegasusautoracing.com/group.asp?GroupID=MIRRORSVINT

I bet any of these are lighter than a powered mirror, lots of choices.....   I am sure there are also other vendors as well.

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 6:25 p.m.

In reply to TED_fiestaHP :

What I really want is a five panel wink mirror. The One Lap civic has one and when I go back to a normal mirror I feel backwards blind. 

Pbw
Pbw Reader
8/8/18 6:43 p.m.

You need the 2007 Honda Accord hybrid rear diffuser, 74550-SFY-000 part number. They are about $55. It helps with MPG on a normal accord. 

 

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/8/18 7:13 p.m.

In reply to Pbw :

you are 100% right. Now I wonder if the Hybrid that I pulled the hood and bumper supports of had one and I missed it. I pulled the rear pumper cover off, pulled the rear beam, and pulled the aluminum rear knuckles and I don't remember it being there. Big huge thanks for the part number. 

mrwillie
mrwillie Dork
8/8/18 7:32 p.m.
Pbw said:

You need the 2007 Honda Accord hybrid rear diffuser, 74550-SFY-000 part number. They are about $55. It helps with MPG on a normal accord. D

 

Do you happen to know if this would fit an odyssey?

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/9/18 8:02 a.m.

In reply to mrwillie :

I can't guarantee it won't fit, but my guess is no. Most of the plastic is fitting around the spare tire well at it looks like it mostly just keeps air from getting caught by the bumper. I can measure the spare tire well on my Accord if you'd like and you can compare it to an Odyssey, but I bet that the well on the Van is quite a lot larger. 

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/9/18 9:55 a.m.

The hood prop is heavy, almost a pound. I think it's over engineered. Typical honda. 

My question is, what aluminum alloy would you choose to make a hood prop out of? It's 5/16 or .31 in diamater. Lots of solid rod and at least a couple of tubes available in that size. 

Online Metals Aluminum Stuff

klodkrawler05
klodkrawler05 Reader
8/9/18 10:17 a.m.

I vote for adding even more engineering, who says it has to be metal? cut both ends off that prop rod and bond them into a carbon tube (Inspired by FM Keiths camera rig build) 

https://www.ebay.com/itm/Glossy-10mm-OD-x-8mm-ID-x-1000mm-3K-Roll-Carbon-Fiber-Tube-Rod-Quadcopter-Drone/252557144948?hash=item3acd943374%3Ag%3Abc4AAOSwl-FZkeS1&_sop=15&_sacat=0&_nkw=8mm+id+carbon+rod&_from=R40&rt=nc

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/9/18 10:29 a.m.

Ideally I'd still get some aluminum tube to deal with the bendy sections so that it would lie under the hood like normal, yes? This sounds like an absolutely stupid way to spend $40 so save 10 ounces. I like it. 

klodkrawler05
klodkrawler05 Reader
8/9/18 10:57 a.m.

well yes, for maximum re-engineering you should probably use some 7075-T6 rod on each end, because it's hard, and it's used for aerospace so it must be good.

I generally stick to 6061 aluminum for my projects because it's cheaper and more readily available which suits me as I'm sort of the measure once rouhly by eyeball, cut 6 times type of person.

MadScientistMatt
MadScientistMatt PowerDork
8/9/18 11:51 a.m.
mazdeuce - Seth said:

The hood prop is heavy, almost a pound. I think it's over engineered. Typical honda. 

 

My question is, what aluminum alloy would you choose to make a hood prop out of? It's 5/16 or .31 in diamater. Lots of solid rod and at least a couple of tubes available in that size. 

Online Metals Aluminum Stuff

How about a carbon fiber fishing pole?

Daylan C
Daylan C SuperDork
8/9/18 12:11 p.m.

How about a removable prop so it's weight doesn't matter?

Woody
Woody MegaDork
8/9/18 12:38 p.m.
Daylan C said:

How about a removable prop so it's weight doesn't matter?

Actually, he already has a removable prop rod, so it's free too!

mazdeuce - Seth
mazdeuce - Seth Mod Squad
8/9/18 12:39 p.m.

In reply to MadScientistMatt :

The standard prop is all bendy to fit where it should fit. Which brings us to Daylans suggestion of a removable prop, which would make the most sense, but I kind of like the elegance of a factory type prop on a car that is daily driven to drag my kids around. 

In other thoughts, they still haven't built the Bilsteins that I ordered months and months ago. I'm getting tired of sitting still which has me thinking. Is there any reason I can't put an analog scale under all this, level it out, and use it to get a reasonable approximation of spring rate? 

Not looking for three significant digits type of accuracy, but maybe just enough that I could estimate rates to knock together some cheap coilovers? 

sleepyhead
sleepyhead Dork
8/9/18 12:49 p.m.

In reply to mazdeuce - Seth :

Sounds like a good excuse to buy a laser distance finder to more accurately measure deflection.

I mean, to better measure the kitchen for new cabinets.  cheeky

Also, aluminum hood sounds like a good time to strip the paint off, put down a little wrap for glare reduction where it shines into the car, and then polish for ultimate lightness

captainawesome
captainawesome New Reader
8/9/18 1:26 p.m.
mazdeuce - Seth said:

In reply to MadScientistMatt :

The standard prop is all bendy to fit where it should fit. Which brings us to Daylans suggestion of a removable prop, which would make the most sense, but I kind of like the elegance of a factory type prop on a car that is daily driven to drag my kids around. 

In other thoughts, they still haven't built the Bilsteins that I ordered months and months ago. I'm getting tired of sitting still which has me thinking. Is there any reason I can't put an analog scale under all this, level it out, and use it to get a reasonable approximation of spring rate? 

 

Not looking for three significant digits type of accuracy, but maybe just enough that I could estimate rates to knock together some cheap coilovers? 

I think you could fashion something up that works like the one in this video:

https://www.youtube.com/watch?v=09wpm0Woe-Y

cmcgregor
cmcgregor Dork
8/9/18 2:13 p.m.

In reply to mazdeuce - Seth :

Maybe think about somehow constraining the spring so that when things go sideways (literally), you don't get a nice hole in the wall - but otherwise yeah go for it!

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