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TB 4.2 Staright Gas Snorkel?

Tech Talk for Nissan owners.

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Posts: 8
Joined: Sat May 10, 2008 8:02 am
Location: Batemans Bay NSW

TB 4.2 Staright Gas Snorkel?

Post by Trunt88 »

Hey Guys, Ive Been Reading this forum for ages now and i have finally bought a 4WD. Its a 91 Ford Maverick tb4.2 on staright gas with 2in body lift, 2 inch coil lift with rooted Gabriel Blue Rider Shocks and 33in Gt Radial Savero Mt's.

My Question is, If anyone has done or knows how to Modify the air intake of these to suit a snorkel system, It has an Impco 300a system and as such the air intake has been modified to suit this and has really made it look difficult to fit a snorkel and actually have it seal up.


Does anyone have any thoughts or suggestions?
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Post by PGS 4WD »

You need a balance line and a retune on the dyno or it will lean out at high speed cruising and may have a tendancy to stall when pulling up form speed.

Joel
-Pre trip inspections/ servicing
-Suspension/ custom modifications
-4wd Dyno & tuning
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Posts: 8
Joined: Sat May 10, 2008 8:02 am
Location: Batemans Bay NSW

Post by Trunt88 »

Ok... Wow well how much would you think i might be looking at roughly for the dyno and stuff...?
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Post by create »

I have total LPG on my GQ. I have an Airod system and it doesnt need a balance pipe. I have no problem with it stalling. I am using a EFI manifold too. I have a mate who has a GU and he has a Impco 225 and has no porblems either.
Nissan GQ Patrol '89
TB45 ~ LPG ~ 33' bighorns
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Post by naif »

my gq is duel fuel, impco 200 mixer and 300A(i think) converter and dosnt currently run a balance pipe. ive often wondered if it needs one as it does have a snorkel.
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Post by jessie928 »

if your snorckle is sealed properly and slightly Pressurising the intake ( the diaphram in the mixer) you need a balance tube!

as the gas man pgs says, it will lean out!


Jes
ATTACH BROKEN TOYOTA HERE--->
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Posts: 1258
Joined: Wed Mar 21, 2007 7:49 pm
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Post by PGS 4WD »

If the mixture is set too rich you may not experience the symptoms as I described but the fuel consumption will be poor. The intake will pressurize and without a balance line to equalize this on the converter it will lean out! Your petrol carby has a balance line built into the top that vents to the fuel bowl, it is a requirement that the pressures are equal for a good and consistant tune.

Joel
-Pre trip inspections/ servicing
-Suspension/ custom modifications
-4wd Dyno & tuning
-Qualified mechanics
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