Performance FI intake for type-3?

[Michael1]

Hi Max, you need to modiy the wbx intake for sure . But way the better than useing dcnfs and sucking hot engine air
Into them.
The plenum size has to match the cc of the engine.
If you remove the original oil filter (i would) and modify the sheetmetal , the cb intake will fit

[Chip Birks]

Why not? Do stock dual port manifolds stick up too high?

[Michael1]

On the left hand side there is the oilcooler in the way of the stock type 1 intake.

[Max Welton]

Hi Max, you need to modiy the wbx intake for sure . But way the better than useing dcnfs and sucking hot engine air
Into them.

The plenum size has to match the cc of the engine.

Ah. I have two complaints with 99% of the dual carb setups I've seen. One is the increase in noise due to the little tin filters. And the other is that they draw hot air from inside the engine room. My plan in this case it to build a "hat" for each side similar (maybe identical) to some I've seen for boosted type-3s, run a large box filter in the stock type-3 location ... and pull the air from outside. I might enlarge the stock type-3 nipple in the right rear of the engine room. It looks a little small now.

If you remove the original oil filter (i would) and modify the sheetmetal , the cb intake will fit

I'm sure you meant cooler.

So you'd have me remove the type-3 oil cooler and modify the tin in such a way as to not compromise air flow inside the shroud? And I would need to add an external cooler. I'm sensing a slippery slope.

Max

[GS guy]

Any way to modify a T4 FI intake to fit the T3 heads and shrouding? Forgive me my lack of knowledge on the T3 cooling system and associated cylinder/head & oil cooler shrouding - except I love the T3 fan inlet seen on many early buggies and Manx SR's! T4 already came in 2L and IIRC it's been shown the stock T4 2L plenum can support in the 130hp range (maybe more?). Modify the runners to work with the T1 head style inlet flanges? At least that would give you a single throttle body to deal with.
Jeff

[Michael1]

Yep Max, oil cooler
2110cc with only the stock cooler?
Hmmm , what are the specs on the engine ?
A T4 intake is nearly the same a the wbx intake
The head mounting is different.
A single TB is easier to set up and handle...
Than ITBs.
My idea is to put an aircleaner outside the engine compartment ....but hide it from the enviroment...behind the rhs fender ,maybe ?

[Max Welton]

You really don't like ITBs do you?

Max

[Michael1]

Well, i have and will use VFR800 ITBs for my squareback....
With CB Pressure Covers...
I just dont know how i will hanlde the cold air air cleaner.
My intakes are Matchported to the heads
This is the reason for it
I just like the single TB Idea better

[Max Welton]

Those are pretty short. Might even fit under the cover with the right manifolds. They flow enough for the original 105HP VFR800 engine but a little small for my 2110. I like that they come with an FPR and TPS and are already setup for a cable pull throttle.

Here they are in type-1 fitment:

20150503_154919.jpg

Max

[Michael1]

Hmm, i have a 2275 engine and no doubt they will deliver the performance i want.
With 44IDF you run a 34 venturi to make 150hp
The TBs have 36mm or 38mm , i forgot
Maybe i need bigger injectors, but thats it...

On thesamba is a user (Luke72) went from 48mm (IDA) TB to 37mm(Still IDA) get mid range performance and throttle
Response.

Jenvey Dynamics Makes super short IDF style TBs that leave enough room for airfilter Ideas

On my notchback , i will simply use the stock Type3 injektion parts , stock cc and stick a Turbo in front of it

I cant wait to see what you come up with

[Max Welton]

I just dont know how i will hanlde the cold air air cleaner.

I'm planning a trip to the local pay&pull for filter ideas. If I can't find something that would work in the type-3 filter location I might look at putting it to the right of the engine under the deck. I'll be connecting the ITB hats to the filter with suitably sized hose so the filter can really be anywhere there's room, maybe even up over the right axle tube? Once the filter location is set there would seem to be any number of options for pulling clean outside air into it.

Max

[Max Welton]

The TBs have 36mm or 38mm , i forgot
Maybe i need bigger injectors, but thats it...

I think I measured 36mm. As I said, the original application made 105hp and presumably the TBs were sized for that. Bigger injectors would not make it flow more. I bet they'd be terrific on a 1776.

Max

[Michael1]

Hi Max,
Flow is determitted(correct word / spell ? ) by the smallest diameter ( or surface ) in a tube or given enviroment
So weber carbs use 28-34mm venturies ......

Sorry for the spell, english is not my native language ....

It has nothing do with the hp the original engine did.....

Type3 has 40mm (i think) tb size , A Dihatsu (small japanese car) has the same size, but nearly double the hp.
A guy here STF has a squareback with a bigger cc Type4 engine. I bet he makes more than 105hp.

Last but not least , you dont want big duration cams on short type3 manifolds.
A 2110cc with low compression ( you want to use only the stock oil cooler? Right?) and a mild cam
Will not produce "huge" amount of horsepower.

This is my last comment as i like to see what you come up with.

Regards
Michael

[Max Welton]

Well ... the 2110 can't be a type-3 for this car. It is build on an AS21 case and has no place to mount a mustache-bar. So I'm sticking with the 1776. ;-(

New plan: Fit up my VFR800 TBs. Including the fuel rail, these stand about 3-1/2" above the manifold.

Clearly these won't work. I'll need some short IDF manifolds.

20201211_125744.jpg

20201211_125732.jpg

Max

[Max Welton]

So ... 3" for the manifold

https://www.cbperformance.com/product-p/3170.htm

... and 3-1/2" for the TB and fuel rail.

It will fit!

20201211_133455.jpg

Max