3vzfe specs

[GaryA]

Anybody have the crank journal measurement for main and big end ,also the bore size just want to make sure it is all standard before i order the parts. :pray:

[adamh]

bore size of pizy? or rod

[lodgeman]

sorry i cant help mate! had to scrap all my stuff when i moved. all i have left is a couple of pistons, could measure the inside of those if it helps?

[GaryA]

Of the piston, i know it's 87.5mm just wondering if the bore is still in spec after all the honing i've been doing . The crank looks like it's never been machined but thought before i go and order all the bearings and rings i had better make sure , don't want to torque it all up and find it locks up solid :doh: Been googling and can't find anything

[GaryA]

all i have left is a couple of pistons I know where to come when i've blown a hole through mine :whistle:

[adamh]

if it helps on a 1.6 n/a the bore size is asked to be between 3 and 4 thou over piston size

[adamh]

compression of 3vzfe and 4age is roughly the same aswell so i wouldnt have thought any major difference on bore clearence, also busting the glaze on bore takes negligable material off the diameter. if you was upto and around 0.075 - 0.10mm oversize with the bore that sounds good to me, sticking new rings in?

[GaryA]

Ah that might help , i've put one of the old rings down the bore to see what kind of gap i've got . Looks ok , i seem to remember from my apprenticeship days something about 3 thou for every inch of piston dia :eh:

[adamh]

erm, sounds a bit loose to me matey!.. 12 thou clearence will basically set your sump alight ;) . these old forged engines have larger clearences i understand. id be well happy with 0.075, although i'm sure it will be 0.10-0.12mm with a hone and clean and general age!

[adamh]

ok have checked the 5s-fe and 3sgte , they are both 3 to 4 thou clearence and so is ye-olde 4age.. so thats what your aiming for, it wouldnt be any different for the 3vz

[GaryA]

erm, sounds a bit loose to me matey!.. 12 thou clearence will basically set your sump alight :whistle: it was many moons ago and the workshop foreman made me rebuild a 1920s straight six , no wonder it was a bit smokey lol Still think i'm going to have plenty of blow by coz i might have got hold of twins .......... er T3's that is :jump:

[adamh]

:whistle: it was many moons ago and the workshop foreman made me rebuild a 1920s straight six , no wonder it was a bit smokey lol Still think i'm going to have plenty of blow by coz i might have got hold of twins .......... er T3's that is :jump:
twins :D

[JB]

Sent you a pm Gary
If anyone else needs such specs I can send copies from engine repair manual

[adamh]

i'd be most interested to know the specs please jb..

[Peebs]

If it help, you can halve the figures givien out by most information, i.e. mauyfacturers or manuals (hainse ETCDD)

I sent a set of twin pot barrels off, from my 350LC, to a tuners once. Roger Keen it was. I saw a write up on him in a bike mag, he was a TZ (RD based) 2 stroke bike tuner. He halved the .28000 clerance to .14000 on those barrels and the resutls were superb. The engine (an RD350LC) is still runing to this day 6 years on (used to last me 2000 miles)

[superchargedsam]

crikey Peebs thats good ! had to rebuild the engine in my RGV250 every 2500 miles before the power valves ate the pistons which they did on a semi regular basis !

[JB]

Ok short extract for Wombat -if anyone wants a full photocopy pm me ypur address with what data you need and I'll send you relevant pages
Cyl bore dia STD mark1 87.500-87.510mm
mark2 87.510-87.520
mark3 87.520-87.530
Limit STD 87.73mm
O/S 0.50 88.23

Piston ring end gap STD no1 0.280-0.500mm limit 1.10mm
no2 0.030-0.070 limt 1.20
oil 0.150-0.570 limit 1.17

Main journal dia STD 63.985-64.000
Crank pin dia STD 54.987-55.000

[GaryA]

Thats magic JB will be in the workshop tomorrow er ok then the shed !

[superchargedsam]

Peebs hope your taking note as details could be useful for recent PM sent !