GT1749V on a 602?
GT1749V on a 602?
Sorry guys but I don't know exactly where better to put this question than on this post...Just bought myself a 93' 300D 2.5 Turbo Diesel. Fantastic car and my very first diesel and turbo powered car. I was hoping if someone can help me out here. I was thinking of putting a VNT turbo from a 1.9 Vw Passat (GT17 VNT/GT1749V) or a smaller gt15. I want to get a faster acceleration/ quicker spool up time with this configuration. I'm not aiming for power since I'm stuck with the 722.4 autobox.. What would the Turbo experts suggest? Also I'm going to use the inter cooler from a sprinter 2.9 om662 if that makes any difference ... would this configuration also make my car smoke like a chimney? Thank you
I'm not sure why you'd want an even smaller turbo if it's also VNT. If it's not VNT than a smaller turbo might make more sense, but with VNT you're supposed to have your cake and eat it to with both low end and top end power.
The stock turbo 606 is an example of a smaller turbo being used for the same reason.
(08-01-2014, 01:02 PM)aaa I'm not sure why you'd want an even smaller turbo if it's also VNT. If it's not VNT than a smaller turbo might make more sense, but with VNT you're supposed to have your cake and eat it to with both low end and top end power.
The stock turbo 606 is an example of a smaller turbo being used for the same reason.
(08-01-2014, 01:02 PM)aaa I'm not sure why you'd want an even smaller turbo if it's also VNT. If it's not VNT than a smaller turbo might make more sense, but with VNT you're supposed to have your cake and eat it to with both low end and top end power.
The stock turbo 606 is an example of a smaller turbo being used for the same reason.
It's not hard to avoid black smoke if you have your ALDA intact. Anyways I don't think you're going to improve acceleration much over the stock turbo just by switching to a smaller one, if you have a boost guage you'll see that the boost comes on pretty quickly on the stock automatic-transmission cars, since the torque converter lets the engine rpm jump to around 2200rpm easily.
I would suggest switching out your differential actually, the 2.5 turbo kept the taller 2.65 ratio that the bigger 603 introduced before it. Something like 2.88 or 3.07 would make a noticeable difference in acceleration.
(08-01-2014, 06:52 PM)aaa It's not hard to avoid black smoke if you have your ALDA intact. Anyways I don't think you're going to improve acceleration much over the stock turbo just by switching to a smaller one, if you have a boost guage you'll see that the boost comes on pretty quickly on the stock automatic-transmission cars, since the torque converter lets the engine rpm jump to around 2200rpm easily.
I would suggest switching out your differential actually, the 2.5 turbo kept the taller 2.65 ratio that the bigger 603 introduced before it. Something like 2.88 or 3.07 would make a noticeable difference in acceleration.
(08-01-2014, 06:52 PM)aaa It's not hard to avoid black smoke if you have your ALDA intact. Anyways I don't think you're going to improve acceleration much over the stock turbo just by switching to a smaller one, if you have a boost guage you'll see that the boost comes on pretty quickly on the stock automatic-transmission cars, since the torque converter lets the engine rpm jump to around 2200rpm easily.
I would suggest switching out your differential actually, the 2.5 turbo kept the taller 2.65 ratio that the bigger 603 introduced before it. Something like 2.88 or 3.07 would make a noticeable difference in acceleration.