Need help with 2t-g Conversion

[andurils_sheath]

Hey guys,
nearly finished my 2t-g conversion into my ta22, everything has gone smoothly so far however i have run into a few issues that i need sorting out. All help will be greatly appreciatiated and rewarded with rep.

1st of all i have run into a problem working out what some hoses do. There is two of them coming out of the intake manifold in between each of the runners for the solexes. Ive thrown up some pics below to show you what i mean.







They are two black hoses looped onto themselves and held shut with the white cable ties. One on each side of the manifold. If anyone has any idea what they do/are used for and if i can safely run without them hooked up that would be great. My best guess is some sort of hot water recirculation for colder climates but im not sure.

Second of all. For the carbies i need to run cable throttle. Ive got an sa63 pedal which accepts the cable style throttle but the cable it runs is too short. If anyone has any idea of a cable that is the appropriate length or where i can source one thatd be great.

Im getting a thermo fan with a temp switch, any ideas what temp it should turn on at. I thought maybe a couple of degrees over the point at which the thermostat opens like maybe around 85 degrees. Am i on the right track here or way off.

And last but not least. I cant seem to find any sort of return line for the solexes. Do they not have a fuel return line at all?? Is it safe to run the fuel pump directly into the inlets without any way of releasing the excess fuel??

Thanks for all youre help guys. As this is the first conversion ive ever done and im going into this blind with no real help it makes it hard when these little things come up. If these questions seem stupid i appolise im just wanting to be sure everything is sweet.

Cheers

[Silly Rabbit]

...good work with it so far...looks like you will be blasting around in no time........i can only throw my 2 cents in on some of your issues but i'm sure you will have enough people provide answers for everything......first off the 2 black hoses that you have are not vital to anything.......the inlet manifold I have on my 18RG has 4 different outlets on it and they are all blocked.......some were for recirculation of breathers etc but they are now all blocked......one issue you may have is air leaks from these so when you do block them try and silastic a bolt or something sturdy into them so that the air-fuel mixtures don't get thrown out if air starts to get sucked through one of these holes.........secondly my RG runs what I think is a Toyota Landcruiser accelerator cable.....don't know the model but someone out there might...can't help with the thermo switch question.......got one of those on my RG but don't know the exact setting.......comes on when it hits 70 on the dial is all I know......as for the return line on the solexes......don't think they have one but I could be wrong......hey mine drink juice like there's no tomorrow so releasing excess fuel is not a problem ........best of luck with it.

[skiddz]

1 black hoses are vac for booster
2 bike shop for brake/gear cable
3 NFI sorry
4 NO! dont do that, have a look on teh intahwebz for a diagram, but having the fuel pump and no return like is asking for trouble
5 welcome to the wonderful land of fuckaround..... doh sorry i mean engine conversions

6 cheers
luke

[andurils_sheath]

The hoses definitely arent for the vac booster. At least im pretty sure theyre not. As I already have a line that runs to the brake booster.

And also are you sure theres a return line coz i cant seem to find one anywhere. Or even anything that resembles a return line.

[peedman]

Could it be for the breather return although isnt it put back into the airbox? If they arent used you can get better rubber plugs that dont need a clamp for them to seal properly.

[andurils_sheath]

Yer i guess its prolly some sort of breather return or vac source. Ill open one up and have a looksee inside to see what it leads to. If it appears to be nothing important ill seal it up and be done with it. The car doesnt really have an airbox so i dont know where the breather pipe would go. So maybe ill use one (if it turns out to be a vac source) as the breather return. But why two of them/??

Cheers

[shelldrake]

The two tubes with cable ties should connect(Use one piece of tube). It's a balance tube.

[mchieff]

Im getting a thermo fan with a temp switch, any ideas what temp it should turn on at. I thought maybe a couple of degrees over the point at which the thermostat opens like maybe around 85 degrees. Am i on the right track here or way off.

Cheers

If your thermostat opens at 85 then its probably more like 95 or so. Basically you just set the thermofan up, switch it off and warm the engine up to the normal point it sits on on the temp gauge. Now keep the engine going till the needle rises past normal. Then set this as the temperature the thermofan switches on at (if you get a dial type one then twist the dial till it switches on). The thermo fan should come on for about 30-60 seconds and thats all. The actual temperature it comes on at will be dependent on the conditions of your cooling system, temp sensors etc. Just remember it needs to be above normal (say highway cruise) and your temp gauge is you best friend to know what normal is. Once its working you can tweak it a little to have it come on less often (fan runs for a touch longer but less frequently in traffic) or more often fan runs for shorter time but comes on more frequently. I used to fiddle when it was my daily driver but now I've just set it and forgotten all about it. Its amazing how little it turns on (unless your stuck in crappy light to light heavy traffic)

Hope it helps,

[WDE_BDY]

4 NO! dont do that, have a look on teh intahwebz for a diagram, but having the fuel pump and no return like is asking for trouble

6 cheers
luke

It is very common for factory carb setups to run no return line. It will be fine if you are running the factory pump on the block or a low pressure electric pump with an appropriate pressure regulator. Can't remember the proper pressure for those carbs but it is posted around here somewhere.

Callum

[andurils_sheath]

Thanks guys thats really helpful.

Got it all hooked up today and alas the radiator has developed a leak. likely due to my mistreatment of it. Tried to start it to see if it runs and i think the timing is way out coz its giving me greif. (wont start at all) A few times it backfired into the intake, fiddled with the timing some more and now its firing out the exhaust, ahhh the joys of conversions ey..... Hopefully ill get it all hooked up tomorow and ill try some more.

Cheers for all the help guys its been great.

[joey]

If your still having trouble finding a correct acc cable, i went with a corona (sorry can't remember which year, prob early 80's late 70's , they were carby), there was a long line of them at my local wreckers, just had alook through them all and picked which one was the longest (had trouble previously with one of them being too short), the good thing about it is the whole setup is interchangable with classic celicas (acc pedal, mounting brackets, acc cable ect.). Hope this helps.
Cheers, Joey

[rob20v]

Here is a pic or my 2TG if this helps. It looks a bit untidy so I will try to make it a bit better before I finish.
There is a seperate port for the booster at the rear of the manifold. These just appear to be for crankcase ventilation. Let me know if you need any more pics. Rob.

[peedman]

The two tubes with cable ties should connect(Use one piece of tube). It's a balance tube.

I think shelldrake is right. Ive seen it before and you can see it in the pic above!

[crowncustom]

Those 2 hoses that are blocked off are definitely the balance tubes between both carbs.Connect a straight piece of hose from one carb to the other or if its like the 18RG then it will have a t-piece in it which incorporates the PCV valve.
Cheers Brett.

[TA22 GT]

Hey guys,


Second of all. For the carbies i need to run cable throttle. Ive got an sa63 pedal which accepts the cable style throttle but the cable it runs is too short. If anyone has any idea of a cable that is the appropriate length or where i can source one thatd be great.



Cheers

The stock 2TG uses linkages just like to stock 2T so you don't need a cable. The pedal for the 2TG is the same as the 2T as is the main linkage arm.
On the firewall there is a linkage pivot arm, you just need to take the 2 bolts out and rotate it 180 degrees for the 2TG. Then all you need is the short linkage arm (around 6 inches long in a straight section that goes from the carbies to the pivot arm and you will then have the factory set up of the TA22 GT.

Hope this makes sense.

Cheers,
Simon