Stopsign32v

iTrader: (1)

I've searched plenty and I've come across options but I want to explore this option and you guys tell me if what I am thinking makes sense.

The blue line represents the coolant line that I am thinking of tapping into. This is it:















It clearly goes from the throttle body to the UPPER radiator hose which is before the coolant goes into the radiator. My idea was to remove the breather pipe as seen above and replace it with a metal Y fitting as also seen above. From this Y fitting I would supply the hose to both the turbo and wastegate, thus I would have to use a 2nd Y fitting like the 1st one.

Alternately I was looking and I see the throttle body sees the coolant from the IAC.







Is it possible to bypass the IAC and the Fast Idle Thermovalve and take the coolant directly from the Connecting Pipe or will that cause driveability issues such as searching idle or surging RPMs?

Also does anyone know of fittings that would replace the one in the wastegate now with a push type connecting fitting?

Stopsign32v

iTrader: (1)

UPDATE:


So more searching came up that I can bypass both coolant lines going to the IAC and Fast Idle valve. If this is possible my new idea is to go straight from the coolant connecting pipe that feeds the IAC to then travel to both the wastegate and turbo via the 2 Y connectors. After the turbo and wastegate the lines will again go into another Y then feed back into the upper radiator hose where the original Fast Idle control valve fed into. Red line is new routing.

Stopsign32v

iTrader: (1)

Did even more searching and came up with this https://www.usplastic.com/catalog/it...x?itemid=90892 stainless steel and a good bit cheaper than Grainger. Here is a picture of what it would look like installed. All together I would need 3. All connections would be hose clamped. Is there any reason this wouldn't work well and be a simple solution? Reason I want to use this Y over a T or other type Y fitting is this is a true 50/50 fork in the road type fitting that will cause both routes to see equal amounts of coolant.

jdblock

Why not go from the wastegate to the turbo? Whats the benefit of running two separate lines?

Stopsign32v

iTrader: (1)

That's a good question...Is there any reason this would be a bad idea someone?

Chrisfrom1986

iTrader: (1)

You're running coolant to the wastegate?

Stopsign32v

iTrader: (1)

Yes, it's a water cooled wastegate. Look them up

highschooler

It says coolant to the wastegate is for extreme conditions such as road racing. For drag racing, you won’t need coolant to the wastegate. For the street you probably won’t need coolant to the wastegate. I don’t think you’d need it for auto crossing since the engine won’t be in boost that long. I’m planning on skipping it even though my wastegate has water cooling capabilities.

Stopsign32v

iTrader: (1)

Not according to Tial themselves

Stopsign32v

iTrader: (1)

This is TiAL's response to this question

Stopsign32v

iTrader: (1)

So this is my final idea I think. It is dependent on if the IAC's and Fast Idle valve's coolant ports can be plugged and the car still drive acceptable.

jdblock

Doesn't make sense to run it through the turbo first if the WG doesn't effect coolant temps much.

All you'd be doing is heating the WG for no reason. Water cooling is supposed to keep it cool, not to heat it up.

Stopsign32v

iTrader: (1)

Not arguing you, just stating what TiAL said back.

With that being said I don't feel good about running just one line. The turbo and the wastegate both have flow reducers in them and I feel it could cause some unwanted issues. Wouldn't really save much money or time by going that route vs the one I posted right above your post.

I'm just hoping the car drives good with no coolant going to the IAC and Fast Idle Valve. I've read mixed results both good and bad. Hopefully in South Carolina's weather it won't matter.

highschooler

“it is rather inexpensive insurance of a long service life if you utilize that feature”
So it might extend the life of the wastegate somewhat. In my opinion I’d not bother with the coolant through the wastegate and just buy a new one in 5-10 years, but the coolant might help yours last longer. So go ahead with coolant to the wastegate if you want it to last a long time.

jdblock

Two reason to run a single line:
1-simplicity is best
2-more coolant velocity through the two components

I'm not against running two "lines", I would run a single line in series first, to test function. And if that doesn't work, then run the two components in parallel.

I would even keep the idle components installed, and run lines to the WG and turbo after they go though them.

Pepe14

For my turbo i ran SS line from the front of the block to the bottom of the radiator. Nice and short with jic fittings. Rubber hoses around the turbo areas are risky with all the heat up there.

Stopsign32v

iTrader: (1)

I do agree that simplicity is best but I don't like the idea of heating up the coolant through the turbo and then sending it to the wastegate. Especially when I can easily just give them dedicated sources. But you make some good points. I want to bypass the IAC and Fast Idle to keep the manifold as cool as possible. Also plan to coat the underside of the intake with reflective tape and run a Hondata gasket.

I actually have all parts to do this but I chose not to because of 2 reasons

1. I would rather a source close to the water pump so the velocity of the coolant will be high
2. I didn't like the idea of pumping hot coolant post turbo into the bottom part of the radiator since the coolant travels from top to bottom of the radiator. This will increase the coolant temps and in the south during summer I need all the cooling benefits I can get.

My idea solves both of these "issues". And all lines will have protective heat reflective sleeves on them. Maybe use something like this https://hpsperformanceproducts.com/p...ant-tube-hoses