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From naturally aspirated 225 to a boosted 170 https://slantsix.org/forum/viewtopic.php?t=66100 |
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Author: | Dart270 [ Mon May 12, 2025 10:48 am ] |
Post subject: | Re: From naturally aspirated 225 to a boosted 170 |
Sounds like nice progress overall! Cool trip from S to N too. I found quite a bit of power increase going from 2.5" exh with more restrictive muffler to 3" exhaust with more open muffler. Not much difference down low, though. The turbo quiets the exhaust a lot, so a muffler may not be needed. I bet timing changes could help low end. Beyond that, a smaller turbo might be next... Lou |
Author: | Greg Ondayko [ Mon May 12, 2025 6:51 pm ] |
Post subject: | Re: From naturally aspirated 225 to a boosted 170 |
Awesome trip. I bet the sights were fantastic as the days grow longer up north! |
Author: | lgu32 [ Tue May 13, 2025 10:31 am ] |
Post subject: | Re: From naturally aspirated 225 to a boosted 170 |
Yes. Days came longer but as well the temperature was decreasing all the time. Last 2 days were not so comfort. This was in north Germany. When I arrived and was garaging my bike (at Helsinki) it started snowing! In the past we did trips to mid Europe with a Valiant. Of course with 225. I did one launch test from parking area to highway. The boost comes slowly. 2800 rpm there was just 0.1 bar but at 4000 rpm close to 0.9. Easy launch as no tire spin. Sounded like I have raise my 6500 limiter as it could come before 1/4 mile trap. Smaller turbo? This unit is sold for 2 liter four bangers. I think the Clifford manifold is my problem. Lets see if I made another efi manifold from a stock 1 bbl cast iron version. This is just a dream. Just now I will drive and enjoy, |
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