Splitime

iTrader: (24)

https://www.miataturbo.net/miata-parts-sale-trade-5/blox-honda-itr-gsr-intake-manifold-cut-1-6-intake-51834/

Buy mine! Ship to Gotpsi?.... ~300 bucks gets you SWEET manifold

miatauser884

iTrader: (11)

I've read the thread and can see a few people who have done this. What TBs are people using? How easy is it to hook up throttle cable and vac lines?

Iloveboobies

I'm new to this site and new to miatas but I was a hardcore die hard Honda head.. I can tell you that in allmotor setups the edelbrock victor x manifold is best for b series as far as cast manifolds go, custom sheet metal are best in my eyes and from experience but to each his own... Iv left my Honda dreams behind because I'm tired of all my work being for nothing when it gets.... stolen I had my 92 all motor civic hatch stolen on 8/16/10... (sleeved 84.5mm X 89mm 12-2-1 compresion b20vtec 236whp 189wtq on 93 octane and I used a victor x manifold)
I'm realy liking miatas just trying to learn and be as successful with my miata as I was with my civic..

So my question is what's a max whp on a allmotor miata?

Full_Tilt_Boogie

iTrader: (1)

Who gives a ****? N/A is for ****.

Also, if you think youre gonna make a bunch on all motor power with a Miata be prepared to be disappointed.


P.S. I also love boobies

Savington

iTrader: (31)

180whp give or take 5% in either direction. Be prepared to spend ~10-12k to get there.

We have factory oil squirters, 9:1 compression, iron blocks, and a damn oil feed port pre-tapped on the side of the block. There's a good reason why a lot of people turbo these cars.

Iloveboobies

Lol thanks for the brute honesty and i guess I'm ganna be doing alot of research to try and come up with a turbo build plan..

Well that's a shut load of info that's realy good to know!! Thanks bro! And I'm ganna be looking into a good piston/rod setup and I'm trying to find out what's the best rear end setup to go with? On to the search button!!

sjmarcy

But note that if you get spendie on NA you'll be able to rev the motor higher than most turbo rigs. Hence you stay in a given gear longer. Fuji did nearly 9K before his stock bottom end (except for pistons) broke after two seasons of development.

Cheap turbos like a recycled "greedy" from CL can make a 1.6 run about like a 1.8. Locally a guy added one and in 70F weather can run 0.3s quicker in a 1/4 mile than my NA car did in 100F / Humid. Which is to say about a draw. With his lag from a traffic light he is doomed in street fun. I'm hoping he'll come out to the next autocross, but have warned him that the mod bumps him way up to a mod class where cars can be considerably wilder.

Opti

If you guys are looking for a low cost manifold, there was a guy one of the the turbo dodge forums making sheetmetal intakes for cheap (like 300 dollars).

I'd bet if you found him flanges, did some research to give him dimensions for runner length plenum volume and the rest of the dimensions he'd probably build one for you. I klnow there are alof of guys on here that are proficient with CAD.

I havent done anything with turbo dodges but Ill do some looking around and see if I cant come up with some contact info.

chance91

iTrader: (3)

Thought you guys should know, it didn't work out so bad. I'm going to weld those bungs shut later and smooth it out in there. A very small bit of work with the grinder and the OE fuel rail works. Also, fuel lines re-routing in the future, and the vapor canister needs to go.



Just seein if it fits with everything. Which it does.

platinum

iTrader: (1)

i am a little bit complicated can someone mark these intake manifolds for a big turbo 1800 engine ?

1) Skunk2
2) Edelbrock Victor X
3) Edelbrock Performer X
4) Begi
5) Flyin Miata
6) Stock

and any other that i missing.

chance91

iTrader: (3)

What? I think this merrygo round can stop now. The skunk2 version works well for a number of people in the 300 range.

Splitime

iTrader: (24)

Someone needs to buy mine so I can get it out of the garage.

Gotpsi?

iTrader: (5)

Ya a real mani built to suit. Like the one FRT_FUN is selling, just to let everyone know.

timg

So the long and short of this thread is:

Skunk2 with 1.8L flange welded on (CNC flange or hacked off OEM) and some port clean up from the welding should give good gains on NA and FI engine. The cost of this is the manifold (whatever you can get them for on ebay, or used) + $100 to get somebody to weld it up?

Anybody care to estimate what gains this intake would give to the following configurations (assume I/H/E mods and programmable EFI):

- 94-97 1.8L head with intake/exhaust cam
- 99 head with intake/exhaust cam mod

Why aren't more people doing this?

Tim

doward

I don't mean to be spammin my **** all over this forum, but..

-Blox skunk2 copy saw nearly identical peak power and lost lots of midrange(10hp/12ftlb) on my built 9:1 NA engine with 99 head+bolt ons/AEM EMS. There is a dyno plot in this thread
-Alumnium welding is expensive. $75-100 per hr. The shop that did my motor build and modded my mani put nearly 6 hours into it they said.
-Cam mods and/or high compression may be the kicker to take advantage of the flow
-More people arent doing it, i think, because its all theory. Only a few examples on pretty highly modded cars. Not towards the cheap end of the $/hp scale untill the stocker becomes a signifigant bottleneck to flow.

Nagase

iTrader: (6)

Piece by piece...

What length runners did you use?

GotPSI? Will hybrid the two for 150$.

Cams/headwork is only needed above 7000ish RPM, all the intake builds are showing that.

Even on a 2560, an intake has been shown to be worth 40whp. NA, Emillio has shown it to be worth 10-15whp.

It's well past just a theory.

doward

What length runners did you use?
-filled and redrilled blox manifold, ported to match miataroadster plastic gasket on the outsides of 1&4 runner

GotPSI? Will hybrid the two for 150$.
-sounds like a great deal i missed out on :(

NA, Emillio has shown it to be worth 10-15whp.
-My build showed it to be worth -10 in the midrange and +0 anywhere :(
i linked to my dyno but here it is, dotted line is blox mani and coldside intake, solid is 99 miata mani and monsterflow intake. 94 block built 9:1 CP/eagle/arp/cometic with stock 99 head in preperations for boost




I suppose "your experience may vary" this is just mine. I did it for future boost, but never expected to lose power while n/a

Nagase

iTrader: (6)

Length is usually in inches or centimeters. Not in filled and redrilled... what length runners did you use?

And you didn't hybrid it, you used the blox flange?

This can wait until I hear what length runners you used.

And really, you used a honda flange on a mazda head? Is that really true?

doward

Just went out and measured.
An off the shelf blox manifold has runners between 7 and 7.5"
Runners 1 and 4 are a little longer than 2 and 3.

Nagase

iTrader: (6)

So it looks like the difference here is that your runners are shorter and you didn't use a Miata flange.

There's no way a Honda flange will have the exact same holes as the Mazda, and that's a very important part.