Ace 4-2-1 Header

[Hawk77FT]

Originally Posted by Calum

I'm torn between installing mine at home or taking it to my favorite a shop just to see the reactions.

Easy install at home! If you lift the engine 1-1.5" that over pipe will fit in just nice!

[retrofit]

@AceHeader-MT
Are there any plans for a 4-2-1 header similar to the CS400 but with larger collectors?

I'm interested in the 4-1 Anaconda headers with 44mm collectors as you've recommended them for supercharged builds >300hp. At the same time I want a 4-2-1 design for more low end torque. Of course it would be nice if there was a model that caters for both high hp forced induction and low end torque.

One more question about the 300hp figure quoted here:
https://www.ft86club.com/forums/showthread.php?p=2564247

Is that hp figure at the crank or wheels?

[CSG Mike]

Originally Posted by retrofit

@AceHeader-MT
Are there any plans for a 4-2-1 header similar to the CS400 but with larger collectors?

I'm interested in the 4-1 Anaconda headers with 44mm collectors as you've recommended them for supercharged builds >300hp. At the same time I want a 4-2-1 design for more low end torque. Of course it would be nice if there was a model that caters for both high hp forced induction and low end torque.

One more question about the 300hp figure quoted here:
https://www.ft86club.com/forums/showthread.php?p=2564247

Is that hp figure at the crank or wheels?

More top end power and low end torque? The proper answer, IMO, is larger supercharger. Fortunately you guys have the nice folks at Harrop available...

[Hawk77FT]

Originally Posted by retrofit

@AceHeader-MT
Are there any plans for a 4-2-1 header similar to the CS400 but with larger collectors?

I'm interested in the 4-1 Anaconda headers with 44mm collectors as you've recommended them for supercharged builds >300hp. At the same time I want a 4-2-1 design for more low end torque. Of course it would be nice if there was a model that caters for both high hp forced induction and low end torque.

One more question about the 300hp figure quoted here:
https://www.ft86club.com/forums/showthread.php?p=2564247

Is that hp figure at the crank or wheels?

Due to its construction I think CS400 is better suited for SC, (low end torque) as the header is designed to extract the gases at very high velocity. Shorter secondaries will potentially give you more power so unless someone comes up with a variable length runners to accommodate for both. What this car lacks is the torque as the power you will get by supercharging it anyways. or like CSG said...get a bigger boat...ermm a bigger Supercharger!

[AceHeader-MT]

Originally Posted by retrofit

@AceHeader-MT
Are there any plans for a 4-2-1 header similar to the CS400 but with larger collectors?

I'm interested in the 4-1 Anaconda headers with 44mm collectors as you've recommended them for supercharged builds >300hp. At the same time I want a 4-2-1 design for more low end torque. Of course it would be nice if there was a model that caters for both high hp forced induction and low end torque.

One more question about the 300hp figure quoted here:
https://www.ft86club.com/forums/showthread.php?p=2564247

Is that hp figure at the crank or wheels?

Hey Retro,

We decided against the 44mm Anaconda as tubing ID was only slightly larger then the 42.7 and it was too heavy. For race use anything under 400 wheel HP the Anaconda 42.7 works very well.

We have done multiple custom flanges for customers to match different OP's or FP. Standard cost is +$100USD for this feature and we can do to any header.

If you're looking to maximize high-end HP and low-end torque all from a header it's going to be difficult. The best suggestions are a combination of CSG and Hawk- Get a nice SC for the power and a 4-2-1 header for the low end torque. Harrop, Edelbrock and Jackson racing SC customers are all running Type A 4-2-1's and seem to be pleased. There are dyno sheets all over the forum with their data.

The 4-1 headers really are not recommended for daily drivers. The vacuum draw from the merge doesn't show benefit until almost 5,000rpm.

Any other questions just let us know. There's also lots of good advice from other board members if you want opinions outside a manufacturers'.

Take care,
Ace Header

[Calum]

Is anyone running one of these with intake manifold spacers? I'm curious about how well they play together.

[CSG Mike]

Originally Posted by Calum

Is anyone running one of these with intake manifold spacers? I'm curious about how well they play together.

I do not recommend it.

[retrofit]

Originally Posted by AceHeader-MT

Hey Retro,
If you're looking to maximize high-end HP and low-end torque all from a header it's going to be difficult. The best suggestions are a combination of CSG and Hawk- Get a nice SC for the power and a 4-2-1 header for the low end torque. Harrop, Edelbrock and Jackson racing SC customers are all running Type A 4-2-1's and seem to be pleased. There are dyno sheets all over the forum with their data.

I'm already running a SC (the Harrop kit) with aftermarket header, over/front pipe, catback exhaust, all from different vendors.

The CS400 or the Alpha 250 seem to fit my requirements, for more torque and power, compared to my current header. Some dyno charts comparing both header designs on the same supercharger would definitely help me decide. Anyway I'll keep an eye out for dyno results on these forums.

[CSG Mike]

Originally Posted by retrofit

I'm already running a SC (the Harrop kit) with aftermarket header, over/front pipe, catback exhaust, all from different vendors.

The CS400 or the Alpha 250 seem to fit my requirements, for more torque and power, compared to my current header. Some dyno charts comparing both header designs on the same supercharger would definitely help me decide. Anyway I'll keep an eye out for dyno results on these forums.

What is your priority, torque or power?

[Hawk77FT]

Originally Posted by Calum

Is anyone running one of these with intake manifold spacers? I'm curious about how well they play together.

I am! Very happy with it. I am actually running the Fiebruz ones. (same as the ACE ones). I can feel the power kicking in a bit earlier (500 rpm earlier) compared to when I didn't have them on.

[Calum]

Originally Posted by Hawk77FT

I am! Very happy with it. I am actually running the Fiebruz ones. (same as the ACE ones). I can feel the power kicking in a bit earlier (500 rpm earlier) compared to when I didn't have them on.

I was unaware Ace sold them. I can't find them on their site, got a link?

[AceHeader-MT]

Originally Posted by Calum

Is anyone running one of these with intake manifold spacers? I'm curious about how well they play together.

Hi Calum,

for some reason LHD owners don't generally run the intake risers. The 350 headers and the Delicious tunes are able to extract enough torque. The risers typically hurt top end power.

For the RHD owners only a 250 was previously available. The added intake runner length helped compliment the torque and didn't hurt the top end as much.

We do build intake risers, we do not have them on our website out of respect for Crawford. We typically have only sold to domestic market here in Taiwan.

If you have interest just ask CSG or contact us directly.

PS- your CS should be shipping out shortly.

[churchx]

Move powerband lower imho is a bit better describing then "hurt top end", as later just describes half of story and makes it up to seem as something worse then it is. But yes, story about RHD fitment limitations benefiting from them to get closer to what 350 gets by itself sounds perfectly logical, just as no need for them if CS400 can be installed on RHD as is. Sometimes wondering, if those spacers can be made of dynamical length & controllable from ECU to get most gains everywhere (didn't some motorcycles had something like that?) .. sounds expensive, but then again NA tuning in general is expensive

[Calum]

Originally Posted by AceHeader-MT

Hi Calum,

for some reason LHD owners don't generally run the intake risers. The 350 headers and the Delicious tunes are able to extract enough torque. The risers typically hurt top end power.

For the RHD owners only a 250 was previously available. The added intake runner length helped compliment the torque and didn't hurt the top end as much.

We do build intake risers, we do not have them on our website out of respect for Crawford. We typically have only sold to domestic market here in Taiwan.

If you have interest just ask CSG or contact us directly.

PS- your CS should be shipping out shortly.

The respect for Crawford is admirable. I'm torn on the fact that he was the first to introduce the product, and the fact that if I buy from him I'll be buying from Crawford.


Thanks for the explanation, that makes complete sense.