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80 series help?
Posted: Sun Jun 16, 2013 6:36 pm
by a80crewza
Hi, while driving at higher speeds, 100km/h ish, revs are around 2200rpm. But it seems like i am having to give it to the truck to keep it at that speed. As soon as I take my foot of the accelerator without clutch in it slows down quite quickly. Might be coz i havent pumped up tires in a while. Is this normal
Also boost gauge is telling me i'm getting up to 16psi when feeding it going at higher speeds, seems quite high?.. I think it might be the gauge that is faulty.
Truck is a 1hd-t 5 speed, 33s.
cheers
Re: 80 series help?
Posted: Mon Jun 17, 2013 6:48 pm
by hachi_roku
i have an 80, manual with 35's.. and im doing 2200rpm at 100kmh GPS, and just cruising at motorway speeds im boosting around 10-12psi.. i run 38psi in my tyres for the road.
Re: 80 series help?
Posted: Mon Jun 17, 2013 7:45 pm
by philux
my old manual cruiser was the same factory on 32s, not sure on boost, never had one of them guages, was revving quite high at 100 and took a lot of pedel, wasnt much between cruising and flat foot, foot off the gas and it slowed down pretty quick.
Re: 80 series help?
Posted: Tue Jun 18, 2013 9:15 am
by wjw
philux wrote:my old manual cruiser was the same factory on 32s, not sure on boost, never had one of them guages, was revving quite high at 100 and took a lot of pedel, wasnt much between cruising and flat foot, foot off the gas and it slowed down pretty quick.
Mine sits around 2300 at 100k's easily with the AT's at 38PSI, after a trip with tyres at 18PSI, I struggle to stay comfortably at 90....
I would sort your tires out first
Re: 80 series help?
Posted: Tue Jun 18, 2013 9:51 am
by Jay
hachi_roku wrote:i have an 80, manual with 35's.. and im doing 2200rpm at 100kmh GPS, and just cruising at motorway speeds im boosting around 10-12psi.. i run 38psi in my tyres for the road.
Mines an auto, with 35 x13.5 mudzilla's - around the same figures as above - 2200rpm and boosting around 10psi at 100kph
Re: 80 series help?
Posted: Tue Jun 18, 2013 11:45 am
by wopass
vx manual
285/75/16 KL78's at 40psi
2200 ish at 100
6-7psi cruising at 100
Re: 80 series help?
Posted: Tue Jun 18, 2013 5:18 pm
by a80crewza
Hi, thanks for the replies. Good to know, sounds like my figures are pretty similar to what you guys are getting. Just pumped my tires up to 35 psi for the road, so should make a difference . Is it better to pump them up higher than that even though it says not to?
Cheers.