Thanks for the clarification Imo. That looks to be quite a large honkin fuel pressure regulator!

I am surprised that the pricing on this system is on par with what F.A.S.T was selling about 8 years ago. I continue to be impressed with Carl's offerings.

 

Carl---

figured that you tried hard to make it a dual intake, but as you say, there's a lot going on in there.

It's just hard to tell how much/little room there is by looking at the photo's.....

Will you adapt the Raptor blower and the fancy intake/air box to the 16V kits?

Nice work as usual!!!!

--Russ

 

I made the air filter assembly with an eye to our legacy 16v customers. This air box will fit their cars, and provide a nice cold-air supply for them as well. It will be available as a separate upgrade for them.

Right now, I am still trying to get the manufacturing process down (and with it, the price) on this piece.

5" of snow falling right now - no dyno today! Although I was romping around in it yesterday and she's all ready to go to the dyno. The dyno I favor is in Madison, about 1 hour south for me.

 

Is the pusher (ac) fan the only fan on there now?

 

No, below the air filter asembly we have a pair of electric fans pulling on the inside.

 

Excellent!

 

Back from the dyno.

where we had:

288 HP stock at crank, 249 at the tire, we now have:
374 HP* at the crank, 317 at the tire.

* I am only multiplying by 18% to get the "after" crank number.
Some prefer to use the 20% figure for drive train loss with an automatic,
then take 380 at the crank as your HP number.

This was produced at 4.5 pounds of boost at 6200 rpm, or 19 HP per # of boost, non-intercooled.

You'll note the air-fuel ratio is nice and steady at 11.6 to 11.8:1 where we tuned it to be, adding a little safety to this non-intercooled kit. The A/F went rich at the upper end, and we beleive the spark was being quenched as evidenced by the break-up in the lines at the same time.

We may gap the plugs a tad tighter and go back to pick up the last few HP still on the table, probably about 10 HP, maybe a little more.

This is a stock 85 32v automatic, with stock ECU, stock injectors, and stock spark plugs. The engine idles perfectly, and is a complete Gentleman to drive - until you let the Beast out of the Bag.

The car gets scratch in 1st and 2nd gear, and I have a video going up a hill where the rear end breaks loose twice in each of two gears as the supercharger comes in. We find the Raptor to be very torquey, it comes in hard like a turbo. Lots fo fun!

 

Cool! Now 85-86.0 can feel what it's like to be (a 86.5).

I'm sure there's much more that could be wrung out of that system, safely.

 

The key there is "safely". Of course there is more available, but not with stock injectors, stock ECU, and no intercooler. Our first concern was the safety of a motor that has moderately high compression no knock sensor on it. I think we achieved that.

If you want to go up from here, you certainly can.

PS: the 86.5/87 has 316 HP at the crank. This is well above that.

 

The M28.43/44 seems to be quite resistant to knocking. I don't think they have anywhere near 10:1 as advertised.

FYI: 86.5 have the same M28.43/44 as 85-86.0, still factory rated at 288 chp/302 ctq, but have a true dual exhaust system.

My old 86.5 auto made 288 rwhp/287 rwtq sae with eBay chips, and Ott-X. My current 86.5 auto, with a (modified) Ott-X , SharkTuned ignition chip, but stock fuel chip, stock engine fan, etc., managed a repeatable 312 rwhp/301 rwtq sae, running a tad rich at the top. (Taking the airbox lid off leaned it out to make 316 rwhp.)

Very similar curves...although, I do make more HP up to 4250.

 

Carl-

I have to say I am a bit underwhelmed, but I understand your constraints (non-ICed). AFR is nice, but I would have thought you could have gotten a bit more HP out of that bad boy.

Also, according to my math... 317 - 249 = 68 RWHP gain / 4.5 = 15.1 HP/psi.

Ahh... now I see you took the crank HP numbers. Never mind.

DO you know what your intake temps were? It would have been nice to see the full potential of this system. Get an ICer on that thing and crank up the boost.

 

I thought a 85 HP gain at only 4.5HP from a true non-invasive bolt-on kit was pretty darn good.

 

I'm seriously impressed with that. Add on a set of crossovers and true dual exhaust and you're talking 100hp+. I think it's a really clean system that looks great. I'm probably at about 300hp right now with my bolt-ons, and I have no idea what I would do with another 60-80+!

Very nice looking kit Carl. Maybe someday...

 

Wow, I just wish I had the extra $$ laying around!! Why the wife keeps wanting to remodel the house instead of getting me a SC for my shark is just beyond me!!

I LIKE the idea of keeping it modest instead of pushing it, as to not strain the stock engine. Instead of causing you to have to change out lots of other items(more $$), to make it all work at higher #s without damaging the engine. Even more HP would be nice sure, but I think the gains you've obtained are more than enough for most of us. And $5k is still alot of money to most of us, so by not requiring the additional mods & expense to have even more HP is a great idea to me. And, for those wishing to go to the higher #s, that is still an option for them, but not a requirement for those not wanting to go that route(yet).

I think its very impressive & glad to see more options for the '85-86 32v engines.

 

Carl, I wasn't trying to discount your accomplishment. You certainly have the lowest cost commercial system available. That's not an easy task.

I think part of my confusion was that you're estimating the crank HP, when you have actual RWHP numbers. Based on those numbers you have gained 69RWHP. If you use the 18% correction factor, yes it comes to ~85 Crank HP, but most people here tend to quote RWHP not crank HP.

In any event, well done! (Now put a ICer on that guy and crank up the boost!)

Edit: Also, if you are using the 18% correcton factor, wouldn't the pre-SCer crank HP be 249/.82 = 303 Crank HP? If the car is stock, I would think you should use a 14% correction factor 248/.86=289. Just something to consider.