Ok, some background and a general rant about valve interference and why this motor has come to be (and why im so pissed about the latest round of fails).
Many moons ago I decided I wanted more compression for LPG so I marched into my engine shop with a not-so-great cylinder head and told them...
Pistons were coated by CP. Only 'local' one i knew of was HPC in leongatha. they do good work but cost an arm and both legs. to get everything coated in a 24v I6 (piston crowns & skirts, valves, chambers, ex ports and manifold) comes to around 2k last i checked.
good to know there is someone a...
yes correct the valves just kissed the piston with the belt on. actually im pretty sure it hit when the timing was at the extreme end of its adjustment on the cam gears but it is still too close for comfort. i gotta do something, wont run it like this.
cams are stock cams reground to 280* adv...
Pistons are CP, i dont think they do assymetrical ones. i think thats just JE?
valve pockets are the same size on both sets... the problem was a bit more dire than that, and i wouldnt have minded a bit more valve clearance anyway. those pistons wouldnt have worked at all in this engine, and...
well my replacement pistons finally turned up today. i havent measured them yet but by eye it looks like these ones might actually work.
spot the difference -incorrect piston on the left and (hopefully) correct piston on the right
hopefully i will get some time later in the week to mock up...
The dizzy rotates during installation due to the helical gear engagement. You just take it into account when you slide it in (a bit of twisting by hand will help it slide in easier too)
Forget the gear marks, best bet is to start installing it with the rotor button pointing about vertical, then...
Really just not needed for mass market applications, cost/benefit ratio vs target market and all that. external oil lines mean more work for installing in the car and also there is a greater chance for leaks (like the 7m needs more excuses to leak!)
too much pressure is sorted by the pressure...
please note the above posts are not intended to be dissing any competitor's products or anything, im simply trying to show why ive done what ive done with all this. if they are inappropriate please let me know and i will edit them.
so why go to all this bother? lets have a look at the math....
stock outlet pipe
not much bigger coming back out of the filter and into the main gallery
and lets not forget the vertical gallery in the block, which is around 12.5mm
this is looking a bit better
still a bit...
ok so we all know the stock oil pump outlet pipe is shit and ive run the hard line on many motors now but i always thought there was room for improvement.
in particular i wanted to bypass the restrictive gallery in the block which runs vertically between the hard line and the oil filter, and...
Hey mate glad you like it!
Not much progress on the engine, my father is pretty sick atm so car stuff is on the back burner a bit as im spending most of my days at the hospital and trying to keep up with work in between.
I made a bunch of valve shims this week but havent got them finished...
yeah i went full retard on an aux shaft years ago but have never been game enough to actually run it in an engine. inside the rear bearing journal is hollowed out as well. weighs a fair bit less than standard :)
Timmy belt finally turned up today so i got the front of motor all assembled. Shame im keeping a/c as the tensioner and bracket really un-pretty the engine :(
A better view of the 36-1 crank trigger for my waste spark ignition setup
Also cut and shut the water pipe to suit the LPG...
All the aux shafts ive seen have a blank round section at the back which could be/used to be turned into the fuel pump lobe, back in the day.
And the round section at the front was turned into a dizzy drive gear i believe
Its starting to look a bit less like a bare block now. Replacement pistons should be here this week, ring gaps and rod clearances are already set so they should basically go straight in. Still gotta drill or groove the rods for pin and bore oiling (leaning more towards drilling now)
roller...
Ok i went to the bearing shop this morning and cleared out their remaining Koyo stock of the thrust bearings (4 more sets) and CNC'd up 4 more plates. They arent quite finished yet, precision tolerances for bearing fits and oil clearances = slow work
pm replied.
lol, this must be an aussie...
Also got some shorter studs for the cam caps, and chamfered off the nuts which has helped smooth out the look.
Starting to see the visual effect i'm going for, hopefully in the car you will clearly see the "air path" for each of the 6 cylinders going from intake runner, intake cam...
I dont feel like there's been a heap of progress, but i found a bunch of photos on the camera that make it look like there has been:
Late model GE block is ribbed and studded, for my pleasure
Shit cleaned and ready to go in
Crank hole cleaned and awaiting crank
Crank in the...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.