Injectors to match TB on bigger engines Options

[Literati914]

I know a 2.1 throttle body from a vanagon is a popular option for say a 2270 build or better... and there does not seem to be a need for upgrading the stock 2.0L fuel injectors when using it BUT, since I need a set of injectors anyway, would the following be a good option? What would be the pro's/cons? :

https://www.gowesty.com/product/made-in-usa...ctor-bundle-?v=






.

[Literati914]

What injection are you planning on running?

Oh forgot to mention that part - I had planned on using Microsquirt 1 with the stock 2.0 runners, plenum, filter housing.. but a 2.1 vanagon TB or... a GoWesty TB in an appropriate size. Not going for original looks - just hoped to make do really until ITBs could be afforded.

That being said, on a 2270 I wouldnt run either.

Reasons against a 2270 ?

Even with a larger throttle body a good 2270 will be restricted by any of the stock plenum setups.

Really, I didn't know that.. and didn't think every 2270 has ITBs, so what's the alternatives?

[JamesM]

I had planned on using Microsquirt 1 with the stock 2.0 runners, plenum, filter housing.. but a 2.1 vanagon TB or... a GoWesty TB in an appropriate size. Not going for original looks - just hoped to make do really until ITBs could be afforded.

^This is critical info to know. If you are going Microsquirt you can run pretty much whatever you feel like injector wise. Stock 2.0 injectors are HUGE for their application and should be able to feed ~200hp so flow wise you should be fine. They are 50 year old injectors though that run at lower pressure (poor atomization) and with microsquirt would require inline resistors. Also the connector design sort of sucks. But to your original question they will work and you wont need to go larger, in fact they are probably a bit oversized even for a 2270.

If you are looking at this as a temporary setup AND you already have the 2.0 injectors, then go for it, should be just fine. If you are going to spend money on injectors though there are better options. ITB and d-jet runners use a totally different style of injectors as well, so be prepared if you are planning on ITBs that you will need new injectors.

That being said, on a 2270 I wouldnt run either.

Reasons against a 2270 ?

I have nothing against a 2270.. they are awesome. I was against running d-jet or vanagon injectors on a 2270 as there are better options. As i said earlier though, if you already have the 2.0 injectors and are set on running a stock plenum with them go for it, I totally get it.

As a point of clarification though, if it were me I would look at going 2257 rather than 2270 as AA pistons have pretty much drop in parts to pull of that build at a much better price point. Components to do a 2270 are not as common, and the difference is minimal.

Even with a larger throttle body a good 2270 will be restricted by any of the stock plenum setups.

Really, I didn't know that.. and didn't think every 2270 has ITBs, so what's the alternatives?

I probably should clarify "good 2270", what i mean are the ~2.3L builds that i personally think are the most fun. I like my motors with a bit of a cam that wind up and breath better on the top end. If you are building one with a tame, torquey cam that doesent ever see over 5k and >140hp you might not notice to much in the way of over all power loss. Throttle response between that and an ITB setup you will almost certainly notice though. Over-sizing the throttle body helps to mask the issue some but the underlying issue is the plenum size, and there are no stock plenums designed to feed 2.3L.

Options?
1. Deal with an undersized plenum
2. Use ITBs
3. Fab a fully custom plenum

Whereever possibly I lean towards a single TB system, the larger you go the harder that gets though. It comes down to what compromises do you want to make (ITBs have their short comings too)

If you feel like running the d-jet plumbing , run the d-jet plumbing. It will run, it may even run perfectly to your liking, and even then all that stuff is bolt on and swapped easily enough later on anyways. The beauty of Megasquirt is the never ending tinkering you can do if you feel like it. Having experimented with a bunch of configurations over the last 15 years though i am familiar with the differences provided by the various options, have my personal preferences, and like to offer my experience to educate people during their decision making process. That being said, do what works for you,avent heard anthing mentioned so far that wont work, its just a questtion of how well.