T400 modulator - Aussie V8 | Holden - Ford

howla955 · 26-08-2008, 01:36 PM

Just a quickie......... Which way do I turn the adjustment on the vacuum modulator to have it hold gear longer?

Also.... What would be causing the Tri-matic in my WB Stato to hold second faaaaaAAARRRRRR too long? All was good, pulled out motor for quick rebuild, put it back in and now it holds gear too long.
Cheers

WB5LTR · 26-08-2008, 01:45 PM

vac leak on tri???? (do they even have vac kick down... lol)

howla955 · 26-08-2008, 01:48 PM

Can't find one. Having the opposite problem to kickdown. It won't shift up under normal driving. Really have to rev it out.

WB5LTR · 26-08-2008, 02:01 PM

yer i had same prob on t400 tu rn otu to be vac leak at manifold

howla955 · 26-08-2008, 02:09 PM

yeah... my first thought. have to look harder i think.

shooter · 26-08-2008, 02:48 PM

Tri's do have a vac. Drivers side of the box if i recall correctly.

howla955 · 26-08-2008, 03:21 PM

It's definately got a vac mod. Don't think its adjustable though and even if it was, it worked a treat before i pulled the motor out and i didn't touch the box.

rlj308 · 26-08-2008, 04:02 PM

my vac line fell off the trimatic modulater and it held gear a tad longer and shifted harder?! once reinstalled nice smooth quick shifts come to think i might just block it off lol.!

400HPONLPG · 26-08-2008, 04:25 PM

Follow that little steel line down thats mounted at the back of the block drivers side incorporated with the Trans oil filler/dipstick tube. the engine side should go to Plenum vacuum and the other end will go to the back drivers side of the box and into the Modulator valve throught a short bit of 1/8 rubber vac hose , Check for leaks and ensure its plugged in properly both ends.Before plugging in on modulator end , start engine and see if you have good vacuum down at the modulator end.Now some are adjustable they have a Blue stripe on then , some use a allen key and some use a slotted screwdriver end .(the ones that dont have adjustment , can be adjusted by lengthing/shortening the roll pin inside by increments of .020 a time.)Screw it out to changeup earlier, or in to changeup later ,
PS this is for a Trimatic , sorry about that !!!!!!!! too much sheeeeraz

howla955 · 27-08-2008, 11:33 PM

And that about covers it..... Thanks again 400.

26-08-2008, 01:36 PM	#1 (permalink)
howla955 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Altona Ride: HX ute Posts: 271	T400 modulator Just a quickie......... Which way do I turn the adjustment on the vacuum modulator to have it hold gear longer? Also.... What would be causing the Tri-matic in my WB Stato to hold second faaaaaAAARRRRRR too long? All was good, pulled out motor for quick rebuild, put it back in and now it holds gear too long. Cheers Last edited by howla955; 26-08-2008 at 01:47 PM.

26-08-2008, 01:45 PM	#2 (permalink)
WB5LTR Do you ever leave? Trade Rating: (0) Join Date: Mar 2007 Location: Vic Ride: Holden WB ute, '05 WR450F Posts: 2,076	vac leak on tri???? (do they even have vac kick down... lol) __________________

26-08-2008, 02:01 PM	#4 (permalink)
WB5LTR Do you ever leave? Trade Rating: (0) Join Date: Mar 2007 Location: Vic Ride: Holden WB ute, '05 WR450F Posts: 2,076	yer i had same prob on t400 tu rn otu to be vac leak at manifold __________________

26-08-2008, 04:25 PM	#9 (permalink)
400HPONLPG Do you ever leave? Trade Rating: (0) Join Date: Nov 2005 Location: Perth Ride: HZ one tonner Gas only, WB Stato Gas only ,XR650R Posts: 2,253	Follow that little steel line down thats mounted at the back of the block drivers side incorporated with the Trans oil filler/dipstick tube. the engine side should go to Plenum vacuum and the other end will go to the back drivers side of the box and into the Modulator valve throught a short bit of 1/8 rubber vac hose , Check for leaks and ensure its plugged in properly both ends.Before plugging in on modulator end , start engine and see if you have good vacuum down at the modulator end.Now some are adjustable they have a Blue stripe on then , some use a allen key and some use a slotted screwdriver end .(the ones that dont have adjustment , can be adjusted by lengthing/shortening the roll pin inside by increments of .020 a time.)Screw it out to changeup earlier, or in to changeup later , PS this is for a Trimatic , sorry about that !!!!!!!! too much sheeeeraz Last edited by 400HPONLPG; 27-08-2008 at 11:43 PM.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

26-08-2008, 01:48 PM	#3 (permalink)
howla955 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Altona Ride: HX ute Posts: 271	Can't find one. Having the opposite problem to kickdown. It won't shift up under normal driving. Really have to rev it out.

26-08-2008, 02:09 PM	#5 (permalink)
howla955 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Altona Ride: HX ute Posts: 271	yeah... my first thought. have to look harder i think.

26-08-2008, 02:48 PM	#6 (permalink)
shooter Newbie Trade Rating: (0) Join Date: Aug 2008 Location: Melbourne Ride: HQ Posts: 6	Tri's do have a vac. Drivers side of the box if i recall correctly.

26-08-2008, 03:21 PM	#7 (permalink)
howla955 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Altona Ride: HX ute Posts: 271	It's definately got a vac mod. Don't think its adjustable though and even if it was, it worked a treat before i pulled the motor out and i didn't touch the box.

26-08-2008, 04:02 PM	#8 (permalink)
rlj308 Part of the furniture Trade Rating: (1) Join Date: May 2007 Location: ipswich Ride: lj torana, gu 3.0td patrol , trusty transit Posts: 886	my vac line fell off the trimatic modulater and it held gear a tad longer and shifted harder?! once reinstalled nice smooth quick shifts come to think i might just block it off lol.!

27-08-2008, 11:33 PM	#10 (permalink)
howla955 casual poster Trade Rating: (0) Join Date: Jan 2007 Location: Altona Ride: HX ute Posts: 271	And that about covers it..... Thanks again 400.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
t400 stall converter	doctorv8	Wanted (cars & items)	0	06-02-2008 10:45 PM
T400 - Which is the oil out fitting?	blackbart	Holden V8's	0	23-12-2007 12:17 PM
WTB: T400 Tailshaft for HQ 1 Tonner	SLE-EZY	Wanted (cars & items)	1	22-10-2007 03:40 PM
T400 in an HQ 1 Tonner	SLE-EZY	Holden V8's	11	06-07-2007 09:38 PM
T400 to Salisbury Sailshaft	gogo9	Conversions, Rebuilds & Project Cars	7	02-12-2006 09:57 PM

Google Adverts keep this forum alive
Google Adverts