1.8 16v throttle project

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1.8 16v throttle project

Postby TEAM 16V » Fri Aug 11, 2017 11:13 am

Hi guys...
First timer to the golf for but been a golf man all my life....
I am current busy with my 1.8 16v kr motor, going throttle setup, all parts are standard, replace piston rings and mains for safety's sack, other then that original from top to bottom...

Im running 20v throttles from the toyotas.

However got one problem with the water housing that seems to have no play when throttle and intake is assembled.

ANY IDEAS WILL HELP ???
EVEN ANY TIPS ON ADDING A LITTLE MORE POWER FOR MY NA 1.8 16V KR THROTTLE SETUP.

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Re: 1.8 16v throttle project

Postby PapaJo » Sat Aug 12, 2017 11:47 pm

Where are you based and pm me your email address or whatsapp number and I will send you some pictures. You have two options, block the water on the front of the motor or modify the flange by cutting and welding it and angle it downward to clear the throttles. Photobucket not working anymore and internet slow connection at work or I could have uploaded pictures here via postimage. Can upload next weekend when I'm back at home.

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Re: 1.8 16v throttle project

Postby BlueBlob » Wed Aug 16, 2017 10:59 am

Yup, easiest is to block off the front port. Means you have to re-route big parts of the water system though, and in my case, I had to remove the thermostat also because of it.

Have you sorted some plan for the alternator yet? That was the biggest issue I had to deal with.

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Re: 1.8 16v throttle project

Postby PapaJo » Wed Aug 16, 2017 2:28 pm

BlueBlob wrote:Yup, easiest is to block off the front port. Means you have to re-route big parts of the water system though, and in my case, I had to remove the thermostat also because of it.

Have you sorted some plan for the alternator yet? That was the biggest issue I had to deal with.


Did you go the ABF and 6pk belt route? Post pictures here to help him out.

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Re: 1.8 16v throttle project

Postby BlueBlob » Wed Aug 16, 2017 2:33 pm

PapaJo wrote:
BlueBlob wrote:Yup, easiest is to block off the front port. Means you have to re-route big parts of the water system though, and in my case, I had to remove the thermostat also because of it.

Have you sorted some plan for the alternator yet? That was the biggest issue I had to deal with.


Did you go the ABF and 6pk belt route? Post pictures here to help him out.


Yeah so my initial idea was to turn my 8V into a throttled 16V, with a budget of R0.00.

Plan was literally to use what I had lying around (2E sub, KR head, and a garage full of random bits).

In the end, I used the front bracket off some MK3, alternator off some Polo, and then converted the whole bunch of pulleys to the flat-belt setup. But this involved making my own bottom pulley.

Basically, it was a mess (and still ended up costing around R40k all in). :lol:

Issue is that with the stock setup, the alternator fouls on the throttles, but this will kinda depend on which adapter/manifold you're using.

I'm happy to take some pics tonight of what I ended up doing.

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Re: 1.8 16v throttle project

Postby BlueBlob » Wed Aug 16, 2017 2:42 pm

Oh, it's also worth adding that I used this adapter to get the Toyota setup to bolt to the 16V Golf.

With this guy, you don't have a choice but to block off the front water channel.

Image

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Re: 1.8 16v throttle project

Postby PapaJo » Wed Aug 16, 2017 8:15 pm

Goodlooking adaptor.

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Re: 1.8 16v throttle project

Postby BlueBlob » Wed Aug 16, 2017 8:21 pm

PapaJo wrote:Goodlooking adaptor.

From 8V Performance (ironically - hehe)

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Re: 1.8 16v throttle project

Postby PapaJo » Thu Aug 17, 2017 2:28 pm

BlueBlob wrote:
PapaJo wrote:Goodlooking adaptor.

From 8V Performance (ironically - hehe)


Sorry for hijacking the OP's thread, but did you reshape the top of the port on the head the same as the adaptor to get rid of the edges on the head for better airflow?

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Re: 1.8 16v throttle project

Postby BlueBlob » Thu Aug 17, 2017 5:14 pm

PapaJo wrote:
BlueBlob wrote:
PapaJo wrote:Goodlooking adaptor.

From 8V Performance (ironically - hehe)


Sorry for hijacking the OP's thread, but did you reshape the top of the port on the head the same as the adaptor to get rid of the edges on the head for better airflow?


Nope. Time didn't allow.

And then it made more HP than I was expecting, so for now I'm not going to bother either.

When I build the "special" version of this motor in a little while, I'll bother with stuff like that.

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Re: 1.8 16v throttle project

Postby panic-mechanic » Thu Aug 17, 2017 5:33 pm

Well something interesting about that. Many years ago reading books on performance there were some interesting opinions of some serious tuners.
allowing a manifold that is slightly smaller than the port does 2 things
1) creates a almost venturi effect as the air speeds up as it passes that point.
2) when the air reversal happens when the valve closes that same step creates turbulance which then stops or slows down the air reversal and tumbles the fuel air mixture which is still there which helps to mix it.
so they basically found that it makes more power than actually perfectly port matching the head and manifold.
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Re: 1.8 16v throttle project

Postby PapaJo » Sat Aug 19, 2017 10:43 am

Interesting explanation, panic.

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Re: 1.8 16v throttle project

Postby TEAM 16V » Wed Aug 23, 2017 9:30 am

Thanks guys for all the advise and guide.... We managed to find a water housing at motor-drive.

We current at the stage with the altenator, my friend and master machanic Patrick mentioned about the polo brucket that might work....

I would love to share some pics of our current progress but still finding my feet amoung the forum... Really appreciate all the feedback and the shares ideas

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Re: 1.8 16v throttle project

Postby PapaJo » Wed Aug 23, 2017 10:14 am

Open an image hosting account, like postimage and upload pictures there and then copy the image link in your post.

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Re: 1.8 16v throttle project

Postby PapaJo » Wed Aug 23, 2017 10:15 am

Open an image hosting account, like postimage and upload pictures there and then copy the image link in your post.

Keen to see how you build this.

You are on the right track with alternator and bracket.

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Re: 1.8 16v throttle project

Postby jaredm » Wed Aug 23, 2017 11:15 am

So a noob question, I have an aal motor on a mk2, is there no way to install the Toyota itb's without moving the alternator? Does the polo bracket accommodate the air on also?


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Re: 1.8 16v throttle project

Postby panic-mechanic » Wed Aug 23, 2017 11:23 am

Polo / golf3 basically any of the modern flat belt setups are low enough to get throttles on. No AAL stock setup will not work. Still sits too high.
Hey you are not exactly a noob.
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Re: 1.8 16v throttle project

Postby jaredm » Thu Aug 24, 2017 8:29 pm

So if I use Sarels adapter can I use the Toyota fuel rail and injectors? Do I just need a management and injector plugs?

Noob to NA modding Stephan


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Re: 1.8 16v throttle project

Postby PapaJo » Thu Aug 24, 2017 8:44 pm

jaredm wrote:So if I use Sarels adapter can I use the Toyota fuel rail and injectors? Do I just need a management and injector plugs?

Noob to NA modding Stephan


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Yes, the itb's with the injectors integrated in the fuel rail bolt straight on the adaptor plate. Get the plugs that fit on the injectors and wire up to aftermarket engine management.

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Re: 1.8 16v throttle project

Postby jaredm » Thu Aug 24, 2017 10:28 pm

Awesome, thanks.


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Re: 1.8 16v throttle project

Postby panic-mechanic » Fri Aug 25, 2017 9:43 am

And then cut a huge hole in the bonnet becuase it does not close afterwards.
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'05 Audi A6 3.0L TDI Avant
'07 Audi A4 2l TDI
'95 Audi 90 coupe quattro
'13 VW CC 2l tdi (repair project)
'05 Touareg v10

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Re: 1.8 16v throttle project

Postby BlueBlob » Fri Aug 25, 2017 9:46 am

panic-mechanic wrote:And then cut a huge hole in the bonnet becuase it does not close afterwards.


Unfortunately, yes.

But. Me and another forum member will be building a plenum for mine, that should fit just fine with the rad we're using, with no cutting necessary. Can then duct air in from the side, and still use the short trumpets inside the plenum.

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Re: 1.8 16v throttle project

Postby jaredm » Fri Aug 25, 2017 11:47 am

panic-mechanic wrote:And then cut a huge hole in the bonnet becuase it does not close afterwards.

It's a bust then, no way I will cut my bonnet for it.

I guess it's back to saving up for a VR6 swap now


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Golf 6 .:R DSG CPI Stg2+
Scirocco 2.0TSi DSG K04
Golf 3 VR6 Turbo
Golf V GTi DSG
Mazda 3 MPS

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Re: 1.8 16v throttle project

Postby BlueBlob » Fri Aug 25, 2017 11:50 am

jaredm wrote:
panic-mechanic wrote:And then cut a huge hole in the bonnet becuase it does not close afterwards.

It's a bust then, no way I will cut my bonnet for it.

I guess it's back to saving up for a VR6 swap now


The throttles clear, and even with short tubes it will still clear.

Problem only appears when you try and put the long tubes on (the ones that actually add HP).

Here's my car to illustrate:

Image

Image
Last edited by BlueBlob on Fri Aug 25, 2017 12:19 pm, edited 1 time in total.

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Re: 1.8 16v throttle project

Postby BlueBlob » Fri Aug 25, 2017 11:53 am

This is why it's worth it though. While looking for those two previous pics, I found this one. It's my worked 8V on throttles with 298 cam, and 8V Performance stage 3 head, vs the above 16V, on panic's dyno:

Image

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