Time to start assembling 1.5 TD / 1.9L Franken Diesel.

[Jetmugg]

EGT's were much, much better.  I don't think they ever got over 1300F after turning the boost all the way up.  I'm planning to leave it on the full boost setting from this point on.

Steve.

[theman53]

also, I don't know how your 1.5 is compared to the larger engines, but mine seem to pull better after 1st. I short shift first a lot to get into second by 20mph or so. Seems to get up and go better than winding 1st out. Second is similar but not as bad as first. I usually shift 2nd around 40-45 but I have a completely different 5 speed than what you do. Also the 1.5 may not have the torque that the 1.6 or 1.9 do off bottom...something to think about.

[Jetmugg]

On my 3rd run Saturday afternoon, I spun the tires off the line, shifted about 6,000 rpms from 1st to 2nd, let it rev to 6,000 again between 2nd and 3rd, and then missed the 3-4 shift completely, costing me distance and speed.

You are right - 1st and 2nd are not terribly important, except to get this little truck moving.  3rd gear is where most of the speed is gained, and then the 3-4 shift is important in order to keep RPM drops to a minimum.

I think that when I added the solid urethane front mount (to the core support), it changed the position of the engine somewhat, which affected the gear shift linkage.

I'll double check and re-adjust the linkage, as it's all made up of threaded rods and heim joints.

Steve.

[Alcaid]

Steve,

How many CC did your pump deliver at max? It was 90CC at 3000 pump RPM but must have been higher before that

A 1.5TD can get slightly more HP from a specific turbine than a 1.6TD so you should be able to reach these numbers with the correct fueling, single turbo setups:

Your current setup:
Garrett GT2056-0.46A/R - 165-170whp (need ~100CC of fuel), turbine is the limit

A few suggestions that will handle the high boost you will need:
 - Holset HE211W-5cm - 170-175whp (need ~105CC of fuel), turbine is the limit
 - Holset HE200WG-5cm - 195-200whp (need ~120cc of fuel), turbine and compressor max out at the same time
 - Holset HE221W-5cm - 225-230whp (need ~135cc of fuel), turbine and compressor max out at the same time
 - Holset HX30WSuper-6cm, 240-245whp (need ~145cc of fuel), compressor wheel is the limit but very close on the turbine as well. This is a special version of the HX30W with a 78/46mm compressor, not the 69/40mm, 73/42mm or 73/44mm ones that are easier to get hold of

You need a lot of boost or a good flowing head to get much over 200whp

If going compound you don't need compressors capable of high boost and turbine matching is a different story but if that's what you want to build I can help you out with the matching

[Jetmugg]

The 90cc at 3,000 pump rpm was reported by Goran.  I'm not sure what the "curve" looked like in terms of cc's versus rpm at various levels.  Goran may know, and I would defer to his expertise on the matter.

I really appreciate the suggestions regarding the various turbocharger options.

This season will leave me pretty well broke, and needing to save some $$$ for future improvements.  My tentative plan for the future is to have another head ported for maximum flow, possibly including larger valves if necessary.  Then, I would send the pump back to Goran to increase its output.  In addition, I will have to install a properly sized turbo to support the increased fuel and hopefully better flow through the head.

The way it is now, the engine has consistently run better, and with lower EGT's with more boost.  Any time I restricted the boost, my EGT's have climbed.

I don't have enough knowledge to know if a single large turbo is preferable to a compound setup for this application, but I plan to keep learning as much as I can between now and then.

I really appreciate all the help from folks on this forum!

Steve.

[Alcaid]

Compound will give you higher compressor efficiency, faster spool, lower back pressure and lower exhaust temperature compared to running a single turbo at the same (high) boost levels.