factory boost for TD27T?

Submitted: Monday, Jun 28, 2004 at 17:30
ThreadID: 14209 Views:4005 Replies:6 FollowUps:1
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Well, the topic says pretty much all, I've tried to measure boost that snail is pumping and I get 0 psi on all revs!Strange. Anyway, does anyone know what is the factory set for the boost on this engine?
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Reply By: Wayne (NSW) - Monday, Jun 28, 2004 at 18:12

Monday, Jun 28, 2004 at 18:12

I don't know what boost your vehicle should run but the vehicle must be under load to give a boost reading. You must be driving and at different speeds and different gears will give different boost readings. The Cruiser that I own has a max boost of 12psi. All turbos can be adjusted but too high boost and the motor is under a lot of strain.

AnswerID: 65555

Reply By: biscuits - Monday, Jun 28, 2004 at 18:37

Monday, Jun 28, 2004 at 18:37
If its like most Nissans, it's probably about the 6-7psi mark from the factory.

On the subject of turbo boost on diesels - does anyone know if theres anything wrong with winding the boost up a few pounds on diesels? ie should make a little more power/torque due to more air, run a bit cooler due to running leaner on standard fuel/mixture settings? Your not likely to blow an old diesel up by going from say 6 to 10psi are you compression/reliability wise??

AnswerID: 65559

Reply By: Member - Nick K (VIC) - Monday, Jun 28, 2004 at 20:16

Monday, Jun 28, 2004 at 20:16
Dragan , you should have around 4 psi standard . Did you just fit the boost guage ? if so , you have fitted it on the wrong side of the manifold
AnswerID: 65573

Follow Up By: Member - Dragan T (VIC) - Monday, Jun 28, 2004 at 21:01

Monday, Jun 28, 2004 at 21:01
Wrong side? Ah you mean on the suction side! Nah mate, I've been in to boosting cars a bit, so I can't make that kinda mistake, my downside is the diesel engine, never touched them before. Thanx for the info.
FollowupID: 326502

Reply By: Rob! - Tuesday, Jun 29, 2004 at 10:00

Tuesday, Jun 29, 2004 at 10:00
hi dragan,

Is your terrano on auto? If so do you have that that hold/auto/power switch to the left of the steering column and do you know what it does. especially the hold function.

Sorry, can't help you much with the boost question. I do have the TD27T engine manual so maybe I can look it up after work tonight and get back to you tomorrow if I find anything worthy.

AnswerID: 65634

Reply By: ianmc - Tuesday, Jun 29, 2004 at 12:21

Tuesday, Jun 29, 2004 at 12:21
TD 27t is a bit of a slug from my experience ,probably under stressed, so maybe U can lift it a few psi & benefit. Seems a big variation in boost numbers in these posts so what is a reasonable limit??? I would like to know as I have adjusted my Triton 2.5 upwards & it goes VERY well, also has a 2.5" exhaust & foam filter
& pump timing turned up a bit from factory.
AnswerID: 65647

Reply By: Member - Bradley- Wednesday, Jun 30, 2004 at 17:38

Wednesday, Jun 30, 2004 at 17:38
I'ts probably siezed up from all that running around without oil in it !!! lol

seriously mate if it is standard then 4-6 psi is the average.
AnswerID: 65811

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