Boxer Engines

"Chris_K_F drives an FR-Slow" (chriskf) 11/23/2015 at 10:27 • Filed to: None

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Twin Cam or Quad Cam?

So the other day I posted about a !!!error: Indecipherable SUB-paragraph formatting!!! , that would be a throwback to the AE86 Corolla GT-S factory vinyl.

In my last post I said I wanted to go with “FR-S TWIN CAM 16,” all of which is accurate to the car.

Then I got to thinking. Yeah the FA20 is a Twin Cam DOHC engine, but it does have 4 cams. So wouldn’t it technically be a Quad Cam? So I had my buddy do another mock-up.

I like that this adds another element to the modern/retro theme, but I want to be accurate above all else.

So what say you, Oppo? Is an FA20 Twin Cam or Quad Cam? Which do you prefer?

RamblinRover Luxury-Yacht > Chris_K_F drives an FR-Slow 11/23/2015 at 10:38

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I’d say it’s quad, personally, but either describes something of the overall picture.

Future next gen S2000 owner > Chris_K_F drives an FR-Slow 11/23/2015 at 10:38

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Quad

BiTurbo228 - Dr Frankenstein of Spitfires > Chris_K_F drives an FR-Slow 11/23/2015 at 10:42

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I’d say twincam. It’s got two cams per cylinder, so twincam.

Keeps things simpler so it's just OHV, SOHC and DOHC (excluding the oddball Riley Twincam with it's two cams in the block...)

Tekamul > Chris_K_F drives an FR-Slow 11/23/2015 at 10:44

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Definitely twin cam. Also, I missed the original post, but I really like the look of that.

daender > Chris_K_F drives an FR-Slow 11/23/2015 at 10:47

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I’d go with Quad Cam.

Chris_K_F drives an FR-Slow > BiTurbo228 - Dr Frankenstein of Spitfires 11/23/2015 at 10:48

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Yeah, there are still only two cams operating each set of valves.

McMike > BiTurbo228 - Dr Frankenstein of Spitfires 11/23/2015 at 10:50

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I’d say twincam. It’s got two cams per cylinder, so twincam.

Two cams per cylinder would octocam.

And that would be awesome because 8 > 4.

Chris_K_F drives an FR-Slow > Tekamul 11/23/2015 at 10:51

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Thanks!

I’m guessing it’ll take us a few tries to get the placement right, but luckily I have a buddy who will cut vinyl at cost for me since he likes the idea. haha

Birddog > Chris_K_F drives an FR-Slow 11/23/2015 at 10:54

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You could go the Chevy 3.4l route with “Dual Twin”

Chris_K_F drives an FR-Slow > McMike 11/23/2015 at 10:56

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That would be awesome! haha

But really this is all semantics. It depends on whether we’re counting the cams by number per cylinder bank in the engine (4) or by the number used to operate the valves in the overall system (2).

BiTurbo228 - Dr Frankenstein of Spitfires > McMike 11/23/2015 at 10:57

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Add weight and complexify. That was the saying wasn’t it?

Should say two cam lobes per cylinder...

McMike > Chris_K_F drives an FR-Slow 11/23/2015 at 11:01

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I would do “twincam” as that term usually refers to a each cylinder bank.

Just like if you were going to say you have a four valve head. You don’t need to say “per cylinder” every time.

Chris_K_F drives an FR-Slow > Birddog 11/23/2015 at 11:02

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Lol I think I’d be getting a bit off base there. Also, since the Toyobarus are also nicknamed “Twins” it could befuddle the message a bit. haha

Smallbear wants a modern Syclone, local Maple Leafs spammer > Chris_K_F drives an FR-Slow 11/23/2015 at 11:09

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Single cam FTW

In your situation, Quad.

punkgoose17 > Chris_K_F drives an FR-Slow 11/23/2015 at 11:11

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Since they are both correct. Go with the graphic you like the best. I don’t like the way the I in “TWIN” is hard to read, so I’d go with “QUAD”. Also, I just thought of 16 is the valve count for the engine so go with the cam count of the engine.

Michael > Chris_K_F drives an FR-Slow 11/23/2015 at 11:12

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Toyota’s way of dealing with it:

“Four Cam”

punkgoose17 > punkgoose17 11/23/2015 at 11:13

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Kinja won’t let me edit to fix my punctuation:

Since they are both correct, go with the graphic you like the best. I don’t like the way the “I” in “TWIN” is hard to read, so I’d go with “QUAD.” Also, I just thought, 16 is the valve count for the engine so go with the cam count for the engine.

Michael > Michael 11/23/2015 at 11:15

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Chris_K_F drives an FR-Slow > punkgoose17 11/23/2015 at 11:15

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I’m leaning toward QUAD for all of those reasons too. Although we could space the lettering in “TWIN” when we actually apply the vinyl. But yeah, since the valve count is of the overall number of valves in the engine I think QUAD makes more sense for the sake of consistency.

davesaddiction @ opposite-lock.com > Chris_K_F drives an FR-Slow 11/23/2015 at 11:36

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I just love these photos...

davesaddiction @ opposite-lock.com > Chris_K_F drives an FR-Slow 11/23/2015 at 11:38

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I like it.

Chris_K_F drives an FR-Slow > davesaddiction @ opposite-lock.com 11/23/2015 at 11:42

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Right?! I kinda want to get that picture blown up and put on a wall in my room. haha

uofime-2 > Chris_K_F drives an FR-Slow 11/23/2015 at 12:01

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I like it! Maybe go a point heavier on the lines.

Don’t know what to say on the twin vs. quad argument. Twin is retro throwback, but you’ll have to listen to pedants saying “well technically...”

If you’re patient enough to deal with those people I like twin better.

Chris_K_F drives an FR-Slow > uofime-2 11/23/2015 at 12:09

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Yeah, the actually font sizing, spacing, etc isn’t final. Was just a quick mock-up in photoshop by a buddy. I’m going to be ridiculously meticulous on the actual vinyl. haha

Yeah, that’s the one thing that’s got me teetering on the edge between Twin or Quad.

davesaddiction @ opposite-lock.com > Chris_K_F drives an FR-Slow 11/23/2015 at 12:10

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Oooh... I need this in my garage.

Fopedush > Chris_K_F drives an FR-Slow 03/14/2016 at 16:19

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lol sup

That’s my corolla in your post and I just randomly stumbled across it. I like your FR-S decal idea, my vote is for ‘twin’

Chris_K_F drives an FR-Slow > Fopedush 03/14/2016 at 17:17

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Lol hey!

You have a very nice AE86. I’d love an example like yours to park next to my FR-S.

Appreciate your input on the vinyl, still deciding if I’ll do it or not. I’ve got the Watanabes now, and they look awesome. I just have a lot of other priorities ahead of the vinyl right now. haha