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Engine Specific Info and Questions => IDI Engine => Topic started by: zaprzal on May 05, 2007, 05:06:27 am

Title: Performance mods 1.9D 1Y?
Post by: zaprzal on May 05, 2007, 05:06:27 am

Can I gain some power by turning up fuel screw in 1.9D non turbo engine? Maybe I shouldn't touch it because of smoke and high egt?

Title: Performance mods 1.9D 1Y?
Post by: RabbitJockey on May 05, 2007, 08:15:23 am

yes you can.  you don't have to worry about egts as much on na motors...  but you don't want your car to smoke too much either, it's not very courteous of other drivers haha  :lol:

Title: Performance mods 1.9D 1Y?
Post by: foxracer1 on May 05, 2007, 09:04:44 am

Quote from: Trev0rbr

you don't have to worry about egts as much on na motors...  

You need to worry just as much because it still is dangerous to the engine. There is just less power as a result

Title: Performance mods 1.9D 1Y?
Post by: jtanguay on May 05, 2007, 11:42:17 am

i'd say the egt gauge is cheap insurance.. i got mine from aircraft spruce for around $80 bucks...  probe & gauge included. good deal!

Title: Performance mods 1.9D 1Y?
Post by: zaprzal on May 05, 2007, 12:15:00 pm

yes I've got egt gauge on my TD and I know smoke = hot ;) the question is if my friend can feel any power gains if I turn up fuel screw on his 1.9D NA

Title: Performance mods 1.9D 1Y?
Post by: foxracer1 on May 05, 2007, 02:16:08 pm

Yes

Title: Performance mods 1.9D 1Y?
Post by: RabbitJockey on May 05, 2007, 03:17:24 pm

i thought it wasn't as bad because there isn't a turbo making a big exhaust restriction

Title: Performance mods 1.9D 1Y?
Post by: 935racer on May 06, 2007, 09:20:37 pm

Always use an EGT gauge when tuning a diesel engine, and go test it on long grade/hill if you can.

Title: Performance mods 1.9D 1Y?
Post by: jtanguay on May 07, 2007, 05:09:42 am

my mechanic picked up this 2.4D toyota pickup truck once... i had the honour of being there when he tried to get it to fire up...

he had it plugged in for about 30 some odd minutes... then tried cranking it.  nothing but black smoke baby!!!

took compression tests on the cyls... first one had 360 psi... 2nd one had around 160 3rd had about 80 and the 4th had.. nothing..

problem being with the 2.4D is that the exhaust manifold runs from the 1st to 4th then goes to the downpipe.  what happens is that the first cyl is pretty much ok because it only has to expell its own heat... the 2nd cyl has to expell its own heat as well as heat from the 1st cyl, and so on... so the 4th cyl is pretty much getting baked by the idiot flogging it...  add a turbo, and you can expect much more failures.

but the vw 1.6N/A manifold isn't as bad... but it's still bad.  now if you were running a huge pipe to the atmosphere then egt's could be quite a bit hotter than usual...  it's all about the restrictive manifolds.

and this gentlemen, is why i want to buy one of 959 racer's pulsed manifolds  :twisted: