Why Doesn't Any Company Make A Header For The 5SFE Options

[CyberCT]

I have been browsing this forum for quite some time and have noticed that NO COMPANY make a header for the 2.2l 5sfe. SSAutochrome was about to but then people backed out (and yes, I have seen claims of their poor quality with some products. Fortunately this header wasn't bad. There was one or two instances where they did crack or break though in the MR2 community, and that's about it).

I had three MK II MR2s with the 5sfe. I also had the SSAC header on one of them. Let me tell you the performance improvement was noticable right away. It was almost like night and day. More pull and it ran quicker through the gears.

When I had to put the stock exhaust manifold back on for inspection, the car ran much slower, easily noticable.

Now, the NA MR2 weighs in at @ 2650 lbs. The 94-99 Celica GT hardtop weighs in at @ 2450 lbs, correct? A good header would probably make it quicker in a line than the MR2, which felt good in a line.

Is there atleast a header in the works from a reputable aftermarket company?


I'm probably going to be buying a 6th gen celica in the near future as my new daily driver. Is there any place where I can see the yearly updates they did to the celica to fix problems from the previous year? Like for example, in 93, the MR2 fixed some electrical problems or quirks, and upgraded the suspension and other things. Is there a list like this for the 6th gen celicas?

[darksecret]

You talk like the 5SFE is a diesel, it's stroke is smaller but it is still a good motor, like I said the IR is almost always overlooked in engine building and can make a difference if it was chaged, but that would be changing the way the motor sits under the hood, either way torque is a good thing and even though Honda's are everything horsepower, a car can have a lot of horsepower and make very little torque and yes it still runs good but you have to ride at 7,000 rpm to get anywhere, without torque horsepower is useless, i'm not going to get into a horsepower vs. torque, every car mag on the planet has explained it, neither are better than one another but if you want a quick street cruiser increse the torque, if you want a race car that can run high rpms all day go for horsepower. I do agree with Kwanza on the get an MR2 thing, basic bolt ons won't help because the head is to restrictive to make good use of them, that explains that dabble I went into earlier about cams and stuff.

[Kwanza26]

You talk like the 5SFE is a diesel, it's stroke is smaller but it is still a good motor, like I said the IR is almost always overlooked in engine building and can make a difference if it was chaged, but that would be changing the way the motor sits under the hood, either way torque is a good thing and even though Honda's are everything horsepower, a car can have a lot of horsepower and make very little torque and yes it still runs good but you have to ride at 7,000 rpm to get anywhere, without torque horsepower is useless, i'm not going to get into a horsepower vs. torque, every car mag on the planet has explained it, neither are better than one another but if you want a quick street cruiser increse the torque, if you want a race car that can run high rpms all day go for horsepower. I do agree with Kwanza on the get an MR2 thing, basic bolt ons won't help because the head is to restrictive to make good use of them, that explains that dabble I went into earlier about cams and stuff.
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Again... if that's all you're getting from me trying to explain in layman's terms... you're out of luck. Horsepower and torque are the same thing BTW... only expressed in different ways. Funny that you're trying to argue about horsepower and torque and can't even get that. You can talk about torque all you want... but NO ONE races at 4000 rpms... unless of course that is the redline.

Like I said before... go drive your car, shift it at 4500 rpms (torque peak)... then shift it at 5200-5800 rpms (power peak). It's EASY to tell which accelerates the car harder.