[CraigB]

The next stage of my tinkering continues

Picked up a 1.8ltr throttle body that I'm going to fit to me little toy, just have to tap in a 1/16th vac line ( 1.8ltr doesn't have one ) and it's a straight swap over for my current 1.6ltr throttle body.

Upsizing to a 60mm internal bore size from 53mm should give me just enough extra air flow to liven things up a bit more, roughly another 10hp and better throttle response is the expected outcome...stay tuned for more exciting news and some photos once I clean and fit it

[PhireSideZA]

Can't wait to see the results! Keep us posted

[cruiserfied]

I recon paint it pink.

[CraigB]

Pink you're starting to worry me Tim are you hanging around with the wrong people at the new job or is the house full of girls starting to take it's toll

[cruiserfied]

This isnt about me 

[CraigB]

My ex wife use to say that, she liked pink too

[Asterix]

Can't wait to see the results! Keep us posted

 

[panthersteve]

Can't wait to see the results! Keep us posted

 

 

[CraigB]

Fitted the new throttle body today, it would have been done yesterday if my 1/16th tap bit hadn't gone astray, bloody new bit cost me $48

Here's the two TB's side by side, new 1.8ltr 60mm on the right, I had my calculations slightly out on the size of the original TB as I thought it was 53mm but it turned out to be 55mm bore with a 57mm offset butterfly " who knows why they done it like that ".
The new one is 60mm bore and 60mm butterfly, "note the different sizes in the coolant lines between the two, I'm disconnecting them but if you were going to use them you'll need 2 x 1/2" to 3/8" connecters and just enough 3/8" hose to make the fit.


A pic of the manifold plenum if anyone ever wondered what was inside ( not much ) it's an exact 60mm match to the new TB


All fitted, I re-routed the coolant lines back into themselves as we don't get cold enough temperatures here in WA to bother with it, it'll probably help very slightly to keep the whole induction tract a little cooler anyway but I still left them intact just in case I ever do want to connect them back up.


I ended up changing the induction pipe again as the TB end needed upsizing to 70mm and I disconnected the vacume/breather line which now just has a small filter on the end of it sitting near the battery.


Hope Tim's happy it's not blue anymore though maybe he would prefer pink

[PhireSideZA]

Looking good Craig.

Am I correct in saying that the coolant pipes are supposed to help in heating up the throttle body in cold temps to assist with fuel atomisation? I've heard they are necessary with countries with regular subzero temperatures to keep the frigid air from affecting engine performance but I'm not too sure how correct my facts are.

Was the new TB sourced from an i30 motor as well?

[Dazzler]

Nice work Craig. Look forward to feedback on the end result. 

[Phil №❶]

If I may comment, the heating for the TB should be connected IMO. This is based on the reasoning that low temps are not necessarily required to promote the formation of ice in the TB. Warm moist air, combined with the volatile mix of atomized fuel and low air pressure in the chamber on acceleration will create a fog of condensed vapours which could lead to ice formation. Just my thoughts.

[CraigB]

Looking good Craig.

Am I correct in saying that the coolant pipes are supposed to help in heating up the throttle body in cold temps to assist with fuel atomisation? I've heard they are necessary with countries with regular subzero temperatures to keep the frigid air from affecting engine performance but I'm not too sure how correct my facts are.

Was the new TB sourced from an i30 motor as well?

Thanks

Yeah! the coolant lines are to maintain a constant 69c temp in the TB, no reason for it here, doesn't seem to affect first start choke but I'll test that early tomorrow.

TB came off a 2013 i30 ( 37,000km's ) that I picked up from a wreckers 500m down the road for $250.

Nice work Craig. Look forward to feedback on the end result. 

Thanks Dazz

Results are pretty good so far, did a 90km round trip this afternoon to test before I go south tomorrow and there is some good noticeable results in the torque...not heaps but enough to feel a change and improve the driving experience.

Can't say what sort of hp gain it would have but there would obviously been a small increase there.

Fuel dropped down to 6.4lph from 6.6 so it's going in the right direction, probably stay similar I'd think but I'll test that over the next 4 days down in Margaret River

[CraigB]

If I may comment, the heating for the TB should be connected IMO. This is based on the reasoning that low temps are not necessarily required to promote the formation of ice in the TB. Warm moist air, combined with the volatile mix of atomized fuel and low air pressure in the chamber on acceleration will create a fog of condensed vapours which could lead to ice formation. Just my thoughts.

It's an unnecessary feature in WA, we never get the freezing temps like the sth east and I think even those temps wouldn't bother it, the coolant lines may help prevent the throttle from sticking in those really cold climates though generally the colder the air the better...when I ran the hot fuels in the race cars you'd always try to achieve a nice cold sweat on the carbies and manifold ( hotter the fuel cooler the engine ) and they run so much better on really cold and icy nights.

Water also only flows just on that one little edge of the TB so it's not overly efficient anyway with the rate at which air will pass through it.

[Phil №❶]

Yes, I agree, heating the air will reduce efficiency. It's always a compromise. 

[panthersteve]

Fitted the new throttle body today, it .......

Anyone know why I can't see any of the pictures 

EDIT: Don't know why as nothing has been changed but this morning I can now see the pics 

[ibrokeit]

Fitted the new throttle body today, it .......

Anyone know why I can't see any of the pictures 

Could be the browser you are using - various issues have been mentioned over in the forum problems section of the forum... not sure if any covers these.   I will note a few days ago I had issues seeing some pictures in another topic - apparently the image hosting site has issues or were updating/upgrading.   But I can see the pictures in this topic just fine right now (and when they were put up).

[rustynutz]

All good here too...

I'm using Chrome...

[CraigB]

Anyone know why I can't see any of the pictures 

Are you using an Adblocker or NoScript similar programs ? pictures show fine with IE 11 and Edge.

[Shambles]

Anyone know why I can't see any of the pictures 

There are pictures in this thread?



J/k - they are hosted on imgur so check what CraigB said, also if you're using Firefox make sure you haven't got imgur.com blocked in your photo settings.

[CraigB]

Just got to our stay in Margaret River, the car drove beautifully on the 270km's down here with speeds mostly sitting on 100-110kph 130-150

Sitting on 6.2 at the moment so I'm happy with the fuel usage so far considering the speed I sat on

Cold start this morning isn't affected by the coolant line being disconnected, I thought the choke might not have cut in on first start but it worked just like usual.

[Phil №❶]

Choke 

Didn't know they had one 

Good news it dorve nicely for you 

[CraigB]

Choke 

Didn't know they had one 

Good news it dorve nicely for you 

It's an electronic choke "of sorts", always has  fast idle for the first 10 or 20 seconds on cold start.

Looks like all the coolant line provides is heating for the TB itself, the ambient temperature under the bonnet provides more than enough heat for that in our climate.

[CraigB]

Got home today, did the whole trip on one tank of fuel ( 830km's ) so I must have been running fumes as once we filled up back in Perth as it took 53.5ltr's

Very happy with the TB change over, all the hills and valleys on the tourist drives from Margaret River to Augusta then back to Margaret River then on to Nannup to Balingup to Bunbury to Ferguson Valley back through Collie and home to Perth were such a dream to drive with the extra torque, uphill in 6th isn't a problem anymore

Quite impressed with the economy as well, normally around town with 50/50 hwy and city traffic I'm averaging between 730 to 750kms per tank so to get 830kms through all that hilly terrain was an achievement in itself.

Nearly took out two Emu's on two separate occasions on the back route from Margaret River to Nannup both times they were coming out of the new Pine plantations and standing on the roadside and once you approach they would shy across the road rather than duck back into the re-growth probably why it's so rare to see Emus down south anymore

[Dazzler]

Great to hear Craig..

[Asterix]

 

Good to hear all your work pays off...