PDA

View Full Version : Hartge dyno results, done a dyno test today on the e34 535i



Brent in NZ hartge 535i
02-05-2007, 05:02 AM
did a dyno run on my 1990 535i , that i have recently fitted a semi rebuilt hartge engine in .
i built this engine up with a hartge tunned head ( bigger valves and porting) head is dated back to 1984 came from a 87/88 635i from japan .
i used block from a approx 89 535i or 735i , fitted 10:1 cr pistons from e23 86 735i , had new riings and bearings fitted , valave grind , both head head and block where skimmed .new chains and sprockets etc .
fitted it along with a 5 speed manual box into this 90 535ia 3.45 diff.
was a bit disapointed with the proformance when i got it all going , found a bit more power after changing fuel filter and also swapping ecu from a motronic 1.3(original one in car) for a modified 1.1 from a 87 735 e32, seamed a little better , still enquiring with enginer and parts people why is seams ro be down on power , decided to reset tappets a little loser after doing compression test and only coming up to 150psi ( should be 180+) .also rechecking cam timming noticed it looked at by one tooth , reset to true .
and all seams to be good now .
dyno results show 4 different ecu's we tried , first run was the lowest with the modified unit from a e32 735i about 126kw at the wheels ,
then nest run with the original ecu that came with hartge engine came up to 132.9kw then 2 more goes with std 1.3 motronic ecu and 1.1 motronic ecu both better than the 735i one but not as high as the orginal one .
a friend of mine had his 86 M535i 5psd 3.07diff ,there on friday came up as 123kw (shrick cam and e34 head ) and another guy there witha 90 535is had 112kw (map sensor afm fited).
gavin who owns the place use to have a alpina B10 e34 that did 141kw , and also ahas a e30 335ia with fully worked engine with auto and 4.11 diff doing 158kw .

he said we could tune the ecu a little more to get the power to carry on andn maybe even up a little .
still have std exhaust and intake system ,

first pic is a few of the runs with different ecu's
second pic is the power and the torque
third pic is the fuel and power curves

132.9kw equals about 181hp at the wheels , add about 25% for flywheel rating 226hp .
std e34 is 211hp 305Nm std e28 is 218hp 310Nm .
mine was about 325Nm pretty flat
full hartge spec engine about 240Hp and alpina about 250hp

http://inlinethumb13.webshots.com/588/2368872570033735797S600x600Q85.jpg

http://inlinethumb04.webshots.com/195/2890953460033735797S600x600Q85.jpg

http://inlinethumb15.webshots.com/1550/2337748980033735797S600x600Q85.jpg

http://inlinethumb05.webshots.com/1860/2256476820033735797S600x600Q85.jpg


hope you can see these pics this time

BigKriss
02-05-2007, 08:14 AM
Mine gets 142 rwkw

http://img218.imageshack.us/img218/8596/dyno14hc.jpg

Alexlind123
02-05-2007, 09:15 AM
Ouch.

632 Regal
02-05-2007, 10:29 AM
what rpms you running? I couldnt log in and dont have time to register right now.

Maybe the valves are too large for the cam/rpm/rear gear combination?

Are you able to check EGT on each cylinder?

too much/not enough back pressure?

Plug gap too wide blowing the spark out?

Robin-535im
02-05-2007, 10:33 AM
Mine gets 142 rwkw

http://img218.imageshack.us/img218/8596/dyno14hc.jpg

That's pretty good - what's been done to your engine? The
That jump/discontinuity is from a shift? I assume it put you in a different gear and the machine didn't know, so should everything after that jump be shifted down to be continuous with the first part? Can I do a whole post with only questions?

BigKriss
02-05-2007, 07:43 PM
That run was in 3rd gear the 1:1 ratio. No change of gears there. Stock engine with eat chip.


That's pretty good - what's been done to your engine? The
That jump/discontinuity is from a shift? I assume it put you in a different gear and the machine didn't know, so should everything after that jump be shifted down to be continuous with the first part? Can I do a whole post with only questions?

Robin-535im
02-05-2007, 08:23 PM
That run was in 3rd gear the 1:1 ratio. No change of gears there. Stock engine with eat chip.

Stock + eat... impressive!

That jump is still suspicious, like the units were changed or some factor changed value at 5100 RPM. Looks like the same thing happened in all three pulls, so I would bet the dyno had something weird happen at that point. Interesting. You didn't feel a jerk at that point?

Alexlind123
02-05-2007, 09:02 PM
Stock + eat... impressive!

That jump is still suspicious, like the units were changed or some factor changed value at 5100 RPM. Looks like the same thing happened in all three pulls, so I would bet the dyno had something weird happen at that point. Interesting. You didn't feel a jerk at that point?

Torque converter lockup maybe?

Brent in NZ hartge 535i
02-06-2007, 05:50 AM
what rpms you running? I couldnt log in and dont have time to register right now.

http://inlinethumb44.webshots.com/2091/2963417590033735797S600x600Q85.jpghope you can see the pics now .......

Maybe the valves are too large for the cam/rpm/rear gear combination?
i think valves are same as e34 or maybe 1mm bigger , but they are bigger than stock e28 ones ...

Are you able to check EGT on each cylinder? whats that . havn't done another compression check since i adjusted the cam timming to correct postion .

too much/not enough back pressure?
std exhaust . slieight leak at manifold join to pipes

Plug gap too wide blowing the spark out? std gap on ngk plugs ...

http://inlinethumb02.webshots.com/321/2325999900033735797S600x600Q85.jpg

http://inlinethumb44.webshots.com/2027/2357017480033735797S600x600Q85.jpg