Primitive Skid Plates

gilsonkevin

Forum Member
Joined
Mar 13, 2015
Messages
1
Location
Denver, CO
Car Year
2015
Car Model
Outback
Transmission
CVT
I have a new 2015 OB I plan to explore CO mountain trails with- (sold my 4Runner). Biggest issue I ran into previously was rocky trails and high centering. I thought I would invest in something like Primitive skid plates and lift kit. If I have to stage investment should I start with front skid or diff skid? Any other suppliers folks like out there for skids and lift kits?

Thanks for the info
Happy Trails, K
 
Front skid first - I've never bothered with a diff skid; it's probably the toughest part of your car! Primitive is good; there's a new guy started up with lift kits over there ADF - Anderson Design and Fabrication; may be worth a look.
 
Gidday Kevin

Firstly, a warm :welcome: to the ORS forum, mate.

The most important thing in your car is your engine. It doesn't run well without oil, so you need to protect its sump ...

If your car has a low slung transmission (our SH has; our SG hasn't ... ), then it's equally important to protect this. You also have to think of the possibility of water entering the gearbox and front diff (if separate from each other). One or both of these need to have extensions for their breather holes if you are going to go through water. Water in a manual gearbox or conventional diff won't do much harm, if the oil is changed pretty well immediately. If water gets into an auto box, it will wreck it very quickly.

The rear diff is at more risk from water getting in via the top breather than it is from direct hits.

IMO get the full Primitive protection plates first. Then the lift kit if you need it to compensate for the long nose and droopy bum of the OBs generally. Then attack the water entry problem if it is likely to be problematic for you. It is far more complicated than it might seem!

An alternative to the Primitive skid plate (sump guard) is now available in the States. It is the air bag and seatbelt compliant SubaXtreme cast alloy sump guard. These comply with the Australian Design Rules (ADRs) for air bags etc. We aren't allowed the free rein that is pretty much common in the USA! However, our cars tend to be safer as a result ... :poke:.

I understand that the latest OB is better for approach, departure and hang angles than previous models, but these are still not as good as they could be IMNSHO.
 
:welcome: from AZ.

Right, the OB is not nearly as good as it could be, especially due to all the crap plastic up front:furious:

I agree on the front plate first but I beg to differ on the reason. :monkeydance:

The oil pan is not what hurts the most. Destroy the CVT and will cost you more than the engine, talking 10,000 usd with labor, not to mention you can turn the engine off the moment you bust the oil pan...

The reason the front plate is more important is that the CVT is behind the front wheels and thus unlikely to get the hit; high-centering situations should be obvious.

I have the Primitive full armor, it is 15% off if you buy all of them at once.

The Primitive plate is terrific on dirt roads and easy trails and has covered my back on three occasions with aplomb. However, the Primitive plate will probably not provide sufficient protection against a direct bad hit, like during a descent of a rocky hill. Needless to say, CO offers a ton of opportunities to impale your front real bad and no skid plate on this no-frame, no-strong attachment points car will help if you just slam it on a big rock, I think. BUT, the SubaXtreme plate may offer enough protection against any less than catastrophic hit. Look it up on the Foz forum, they have a really good discussion. Blue Fox claims to have jacked up under the oil pan without issues. The Primitive front plate will not survive that, they allow jacking under the rear edge only.

On the other hand, the AT armor looks attached to very solid points and it covers much less area support-to-support. Looks very solid to me. I rolled off both the front and the mid plate once and skidded down a rut off both without issues. I trust it to provide protection against high-centering. High-centering will destroy your exhaust before it touches the CVT without plates but the plate is lower than the exhaust, which should help.

I have only heard the rear differential plate once. BUT if you use the Primitive lift kit you will drop the rear differential and thus make the plate helpful. Probably not needed at all otherwise.

My biggest gripe with the Primitive plates is that they drop your minimum clearance by 0.5", both front and mid. The AT/CVT one cannot be any different and, again, is behind the wheels so that is not a big issue. But the front one is a big deal.

If I were doing this again, I would press SubaXtreme to tell me the effect of their plate on clearance and if less or even equivalent to Primitive I would get that plus Primitive mid and rear plates.

Also, remember that a stock OB will have a real-life clearance of much less than 8.7. I have 225-65-17 Geolander AT-S on mine and the tire has lost 0.5" height beyond treadwear. Same with the previous, stock sized set. Same with stock tires.

You do not want to go on any but the easiest of trails on stock tires.

If you have the 17" wheels you are lucky: 235-65-17 offers good options and good prices. That is barely doable a size for me, it is just too much so I am stuck with mostly so-so options.

Can you give me examples of Colorado trails you want to do?

I have done a bunch in San Juan though nothing rockier than Cinnamon Pass, Ophir Pass, and Arrastra Gulch. I have done worse around Moab and a lot worse in AZ. Yet to drive Imogene and Black Bear though I almost went up Imogene last year. At the end, timing and weather prevented me from doing that.

You do not want to drive any of those on street tires. Stock tires are a joke even on maintained dirt roads (handling, cornering) and can make you furious even on easy trails.

Remember Traction Control OFF in deep mud, sand, or snow and foot on gas if stuck over hard surface: not too little, not too much. Car will typically regain traction without yielding an inch. There is no such thing as diagonal spin on VDC Subarus...

Good luck :)

Driving a Subaru off-road in the Southwest is a sport of its own.

If you can avoid some of my mistakes, you can do more faster, spending less...
 
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Subaxtreme is currently developing their 2015 OB plates, about to be released.
From their facebook page:
1545662_1799105753647797_4994613829496661146_n.jpg
 
and no longer cast I see; interesting - and more durable!
 
Yeah I know interesting. I don't know why but I have a feeling the moulds for the cast plates were getting too expensive, aswell as the obvious benefits of aluminium plates.
 
I love the design, but, for the love of the off-road, can anyone find me an answer to the question

How does the 2010+ Outback plate affect ground clearance? The pic looks promising, but I have not yet been able to get that info from SubaXtreme.

How does clearance at lowest skid plate point compare to clearance at lowest point of exhaust system? (leaving the bolt heads aside).
 
Fingers crossed! Maybe we will be able to get the measurements soon.

In any case, I like the shape and the airbag testing.
 
Here is my 2010 forester, don't know how it compares to the outback. I have subaxtreme cast sump guard and a primitive rear diff guard. The rear diff guard, exhaust resonator and front bashplate are basically all at the same level.
DSC_0076.JPG

DSC_0075.JPG



My rear guard has been used well!(That's water at the back of it)
DSC_0077.JPG


And suprise booty shot.
DSC_0074.JPG
 
Great many thanks, Almostunseen,

This will surely help somebody with a Foz!

Unfortunately, the design of both the exhaust of the OB and of the plate is completely different. The Foz's tubes, at least the FXT, come from the back of the engine compartment. The OB tubes come from the front and then take a 90 underneath. Because of this, they are quite vulnerable and they also compel whoever produces skid plates to either have a big curvature (Primitive) or follow the exhaust in some other way (SubaXtreme).

As @Ratbag would say--buy a Foz! :) LOL.
 
Haha.

My Forester's exhausts wrap around the front of the engine bay, but they are about level with the bottom of the other stuff. Then swing along the sides. That's where my bent SubaXtreme guard hit them, at the front.

I belted it on a bit of RSC steel with a single jack Canadian block splitter until it didn't ... :biggrin:
 
Hmm, so maybe the design of the 09-13 FXT is different.

Btw, that seems to be the Subaru model with the best angles. The 14+ Foz lost a bit of AA.
 
^ It's impossible to see where the headers go until the engine bay splash guard is removed.

I agree about the MY05-MY07 Foresters. IMHO, these are among the best cars Subaru have ever made.

SWMBO's SH makes up for its longer snout by being about 25 mm higher. It has a longer WB than the SF and SG models, so needs more ground clearance to be that same, if you get my drift ... :poke:.

I prefer my SG all round to our SH. SWMBO prefers her car, which is all to the good :iconwink: :cool:.
 
I know what you mean, but still the gain in clearance is more than the gain in WB as the breakover angle is:

2007-8 Foz 19
2010-14 H6 OB 19.5
2010-14 H4 OB 20.5
2009-13 Foz 21 perhaps a bit more on FXT

Unlimited Rubicon 21
2dr Rubicon almost 26

:raspberry::poke:
 
^ That's what I mean.

The SH occupies around 20-25% more volume than the SG. This makes it feel and behave very differently.

It is a (far) better family car than my SG, but that comes at a cost in terms of size, handling and loss of cargo space (the cargo space in the SH is wider and higher, but about 50 mm shorter than the SG).

That increase in height and ground clearance both shift the SH's centre of gravity higher than that of the SG. One would expect a far better increase in ramp over angle than the 2° you have quoted.
The approach and departure angles are all but identical to those of the series II SG.
A triumph of fashion over engineering, IMNSHO ... :(.
 
So, who is building the next small go-anywhere Suzuki?:monkeydance:

Btw, I think Suzuki left the US market.:surprised:
 
Front skid first - I've never bothered with a diff skid; it's probably the toughest part of your car! Primitive is good; there's a new guy started up with lift kits over there ADF - Anderson Design and Fabrication; may be worth a look.

I have an ADF 2" lift. Love it.
 
try a SubieLiftOz lift kit for the optimum camber & caster offset. Made from 1/4" 6mm steel, not 3/16" 4mm steel.

[FONT=&quot]Very tough[/FONT][FONT=&quot], 33% thicker than the opposition & 77% stronger! Guaranteed never to bend or break!!![/FONT]
 
34244539275_258cd5289a_b.jpg


I have all 3 plates. So far, I haven't bashed into anything yet.
They required some trimming to fit.. But I do feel way safer being way out there with them under the Forester!
 
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