Real Fiero Tech

The throttle bodies I found on amazon (also similar models on Ebay for double the price) appear to be a clone of, or at least an assembled in china version, of the KMS DCOE throttle body: https://en.kms.vankronenburg.nl/products/throttle-bodies/bodies/throttlebody-twin Which in turn appears to be a ...

I have seen those boosters, I am just not sold on their use in high performance driving yet, seems more like a brake by wire deal, my concern is how pedal feel would be. I have thought about a vacuum reservoir, but have to think about that more, and look deeper at the plumbing to the booster, which ...

I think I will wire both the switch and relay in the normally closed side and have 12V power switch on with Key Accessory. If anything happens to the switch the control relay would default to pump run, it would only switch off when vacuum is achieved. The data sheet shows the contacts on the switch ...

I also purchased an electric vacuum pump for the brakes on the car. GM 20804130, interchanges with Standard Motor Product AIP30. Amazon has stock as of 10/19/23 for $108, beating all other prices. https://a.co/d/dTTTHbC The GM model is branded Hella, Made in Mexico by Buehler Motor Inc. These pump a...

Not Kinsler.
Amazon, mega alibaba/wish.com vibes.
https://a.co/d/bInukYR

I bought 4 of the 48mm bore DCOE pattern throttle bodies.
They seem nice. Straight bore at 48mm, sealed shafts on the on the outsides, idle bleed adjustments, mounting studs, orings, and fuel rails included. All for $89. They do offer 50mm units for $135.

Kinsler emailed back:
Discontinued.

Ran PipeMax using the smallest solid roller cam from Lunati, A Isky Cam may be a better choice, less extreme lift, more available in the software recommended lift range and with a 1.55 rocker, they have the largest selection dedicated SD4 grinds I have seen, maybe they can even make a hydraulic roll...

More comparative Data: From Wallace Racing Calcs: Estimate Throttle Blade Diameter For Individual Runner Intake Enter Engine CID: 181 RPM (at Max HP?): 7300 The Throttle Blade Diameter is 61.97 mm The Throttle Blade Diameter is 2.44 inches The HP for your Cylinder Head Flow of 260 is 267 with a RPM ...

https://racehead.com.au/designing-performance/what-size-itb-should-i-use/ from this recommendation a 42mm throttle would be for a 280hp 4 cylinder @70HP/cyl I will need to flow test the 'busa body as well to be sure they actually produce decent flow to even compare this data. even a 500HP V8 would u...

This thread should be renamed to 1984 SD4 Resurrection, since I care much more about the motor than the car it's in, although, the owner did install Koni's, a rear swaybar, and it is lowered a bit, to try to help the car handle better. Did some test mock up with the Suzuki throttles. These are Gen 1...

that will be determined by the output of each cylinder. I'm starting to research more scientific header designs that match the tube closely to the port, and prevent reversion downstream of there with different collector and muffler designs. This might also be a great application for a stepped tube ...

The two barrel intake on the Iron head left only about 1" to the trunk wall with the Holley 4412, Room for the air cleaner to the Decklid didn't exist. Hence the previous owner's use of the large over the roof decklid scoop that held the 14" air cleaner on a 2" riser. I intend to reus...

I'm printing some runner geometries to flow test after the Iron Head is tested in the coming weeks. my older first iterations is a shorter transition from 46mm ID to rectangle, and 30 Degree incline to the port. The 2nd option is a 45 Degree incline with a full length 46mm ID to rectangle transition...

I think my first run at the intake will be to 3d print a test fit item from CF-Nylon I am curious how it will hold up being bolted to the cylinder head, I truly wonder how well these consumer 3D printer polymers compare to commercial molding nylons. my back up plan would be a Lost PLA casting for th...

ericjon262 wrote: ↑Sat Oct 01, 2022 11:09 am are you still planning on ITB's? I bet a tri-y header would work well on one of these.

Im still planning on ITBs based off busa throttles.
I will definitely be redoing the header, the one the car came with has 1.5" primaries, and i don't think that will be enough.

Just playing with some rods.

Watching this video: https://www.youtube.com/watch?v=T8OpKKwB2iM The '437 aluminum head has lower intake ports with the same or near same port spacing as a factory head. The exhaust on the '437 appears to be the same between '801. it does look like there is a lot of room to open up the roof of the e...

Iron '322 traces over the '801 heads. Exhaust is raised and larger than the iron versions. The intake, as ported, is much larger in cross section than the '801, I will really be interested in the flow differences and efficiency as I port it.

I remember that thread. It looks like there may be lots of blame to thrown around with that one. If its not in writing and on a drawing, don't be surprised a machinist doesn't have telepathy. At least in writing they have a weaker defense for the costly mistakes. I'm not saying the machine shop did ...