Have i wrecked my new 70mm T/B .... help please!

[FirstVR_JC]

I am replacing my old T/B with a Mace 70mm one..... This is what i have done

I have snapped one of the torx screws while tranferrring the TPS to the new throttle body ---- it has snapped at the base where it goes in ...... i am extremely pi#$ed off with myself for doing this!!

Can someone please tell me what options i have to fix this situation or is the T/B now stuffed.

Can i get away with just one screw (wishful thinking,,, not likely)?

can i locktite the screw in there or something?

Any advice is much appreciated...... Thanks

Josh.

[python_hunter1]

Tech Tips - Easyout. i think any easy out would be your best bet here mate. failing that you might have to drill out the old screw and tap a new thread to the next bolt diameter. ive posted a link for you on to to use an easy out. hope this helps

[tt460]

Have a look in the yellow pages for a a thread repair guy. if you cant find one call a local bolt shop they should be able to give you a number for one.

[FirstVR_JC]

Thanks for the replies fella'a

I gave mace a call .... they gave me some options and also said that it should be fine with just the one screw ... wouldn't be so fine if it was the iac though.

I installed it like this and have taken the car for a drive..... no issues with idle and no engine lights on.

Not sure about the 70mm T/B yet ..... it seems i have pretty much lost 1st gear --- jumps out of first into 2nd very quick..... this is resulting in a loss of torque i think. Car does not feel as though it has as much torque down low as it did previousy.

It does seem to get up and go in the higher revs though....

Maybe a tune adjustment will fix this .... will have to ask greenfoam or delcowizzard

[Cobez]

Tune adjustment. Always needed with a bigger TB.

[FirstVR_JC]

Tune adjustment. Always needed with a bigger TB.

Yep... hopefully i can get a tune adjustment to fix the problem. Car is very annoying driving without any kind of first gear.

A number of post's stated that the shift points wont be effected in the vn-vr's ... but defiently will in the ecotec's... anyhow, my shift points are defiantly effected.

Have PM'ed Greenfoam, so hoping to hear back from him...

[Ozzie]

The good thing about the early ecotec's is that they can be tuned easily. The newer ecotec's series II VT onward had a flashed memcal.

If you cant get a hold of foamy then try your luck with a local auto electrician, some do tunes.
Best to get it done before its too late. Or even put the old TB back on until you get the tune.

[delcowizzid]

it will change early cause its at less TPS % to make the same torque the ecu thinks you are driving like a grandpa and shifts early cause its worked of TPS % vs roadspeed.hopefully foam has a tune hes done before for shiftpoint changes then youll be laughing

[FirstVR_JC]

The good thing about the early ecotec's is that they can be tuned easily. The newer ecotec's series II VT onward had a flashed memcal.

If you cant get a hold of foamy then try your luck with a local auto electrician, some do tunes.
Best to get it done before its too late. Or even put the old TB back on until you get the tune.

G'day mate, cheers for reply.

WHAT --- 'before its too late'!!!! Too late for what? Will driving the car as it is now cause damage to it in some way....

Think i will put the old TB back on, on sunday ... need to get a new torx screw first though as i snapped one of the tps ones.

[delcowizzid]

well the auto will be slipping a little from the incorrect TPS value V's power being made it wont like it too much in the end

[FirstVR_JC]

it will change early cause its at less TPS % to make the same torque the ecu thinks you are driving like a grandpa and shifts early cause its worked of TPS % vs roadspeed.hopefully foam has a tune hes done before for shiftpoint changes then youll be laughing

Hi Delcowizzid, If foam has his hands full with jobs, are you able to do a tune to fix this problem --- i am also now running the MACE enclosed pod CAI which goes great guns with my old TB and foam tune..... i think you run a pod on a v6 3.8ltr as well.

I have PM'ed foam so just waiting to here back from him.... he has the tune he did for me on file.

[greenfoam]

I've adjusted the kickdown onthe VN/VP's to suit the early opening before but can't remember doing a VR, however it wouldn't be hard to calculate , just a matter of if it's worth me doing it or not. Maybe quicker to just run the stock throttle ?. If the throttle was the right size for the car you wouldn't have a problem

[FirstVR_JC]

well the auto will be slipping a little from the incorrect TPS value V's power being made it wont like it too much in the end

Ok... thanks for that. i will put the old TB back on asap then... until i can get a tune adjustment sorted.
Just took the car out again to pick up the kids and it feels terrible to drive atm.

[greenfoam]

I'll do it if you insist on running the 70 , but I think it's a fairly large mistake running a throttle that size on a car that can't even use all the air a standard one gives. I know it's a good money spinner for mace to sell them but.... I wouldn't, there's not even a gain on a near standard 5 litre

[FirstVR_JC]

I'll do it if you insist on running the 70 , but I think it's a fairly large mistake running a throttle that size on a car that can't even use all the air a standard one gives. I know it's a good money spinner for mace to sell them but.... I wouldn't, there's not even a gain on a near standard 5 litre

Ahhh Geeez .... i resisted for ages about getting a larger TB as there was plenty of info on here to suggest there is no point ...but... i felt like doing something different to the car that was affordable and gave in..... well there's 232 bucks down the drain.

I think i will find the thread about cleaning up throttle bodies and do that to my old one and put it back on ---- my exhaust note has gone to sh%t as well.

OK, i am happy to go with your advice on this one and ditch the 70mm throttle....does seem like alot of unneccasary work when there are no gains to be had .... Thanks for the offer though mate to do it .... appreciated.

ANYONE WANT TO BUY A 70mm TB... hehe

[delcowizzid]

if your exhaust note has changed then you must be getting an increase in air going in the engine changing the fuel ratio or it could be a loss in airspeed causing a rich mix but i doubt that rich will normally make more exhaust noise from fuel still burning on its way out the exhaust ports if you lost low down torque its breathing better too and most likely needs some more fuel to go with the air yeas people say they arnt needed but people do gain torque from them you and twin throttles too

[FirstVR_JC]

if your exhaust note has changed then you must be getting an increase in air going in the engine changing the fuel ratio or it could be a loss in airspeed causing a rich mix but i doubt that rich will normally make more exhaust noise from fuel still burning on its way out the exhaust ports if you lost low down torque its breathing better too and most likely needs some more fuel to go with the air yeas people say they arnt needed but people do gain torque from them you and twin throttles too

Well i did get wheelspin today when i floored it .... which didn't happen before.... The exhaust note has got much more droney. I think the car is breathing better cause it goes pretty good at high revs .... but it is a very unhappy car to drive at the moment....

I have an idea ... I am going to put the old TB back on for now, but i do have a spare memcal and would be interesting to get some power figures of a 70mm TB tuned compared to a 60mm TB tuned. This has probably been done but i'll take it as a fun project for myself --- i think it can be more rewarding testing things yourself rather than reading someone else's results --- especially when you havent been into modifications before.

My car goes great guns with the 60mmTB and foam tune (making the most of my other mods).

Delcowizzid --- are you able to do up a tune to get the car running well with the 70mm TB (may as well try something with the TB now that i have bought it)

This way i will have the foam tune if i want to run the old TB.... and can utilize my spare memcal tuned for a 70mmTB.... and one day compare the difference on a dyno (no tracks or even isolated road around here to safely test the car using G-tech -- i know i'll get done)

Let me know if this is an option.... either here or PM.... cheers Josh

[delcowizzid]

i do have a tune i did for chr's VR auto with 70mm but he had the vn T700 trans at the time so ide have to mess with the gearbox settings a little im about too fly out tuning so will be away for a week but ill get in touch when i get back

[Haydz]

id swap ya for a 65mm one.

but then i wouldnt have one to use in the mean time.

[MACE]

Try running it with the standard memcal if you have it handy