Spare Engine Project

[jimnielsen]

Hi all.. I have just received the spare Q4 engine that I have purchased. Like my car, it came from Japan. I don't know anything about it except that it is here. I can see from the outset however, that it has had some 'mods' done to it. For example the "T" piece water hose at the rear of the engine has been sorted with a stainless steel job (like I have done on my own.) The inlet manifold oem hose clamps have been replaced with aftermarket ones - perhaps to have taken the head off - or maybe just to fix the rear water hose - who knows... But it seems to have all its sensors, etc, so at least I have some spares on that front.

I plan to disassemble the engine, measure everything and make a much more powerful engine than the current one - but that will be very expensive, so I am planning to do it over quite a spread of time.

SteveNZ - will a 131 bell housing bolt up to this engine?

jim ~...

[SteveNZ]

The Engine looks good Jim, on the outside anyway. I've never seen a Fiat or Lancia with that pipe around the front of the motor; is that a an EGR?

Yep the 131 bell housing will bolt up. Depending on what 131 bell housing you have the starter motor may not fit but Ive seen brackets etc made up to make it work

[AlfaJack]

One clean looking engine! Wonder how many miles it has on it. I see it came without the AC pump which is good.

[AlfaJack]

The Engine looks good Jim, on the outside anyway. I've never seen a Fiat or Lancia with that pipe around the front of the motor; is that a an EGR?

Yes, that is the EGR which most of us have removed by now

[Brul(tm)]

looking good Jim
I''ll be following your rebuild.
I am still busy at home, didn't finish in time to start on my engine.

Regards,
Marc

[jimnielsen]

The engine is clean as it was 'steam cleaned' prior to export, if you don't get that done at the port of origin, Australian customs will do it for you for about $250!! Yes, I have no idea how many miles the engine has on it - hope to get some indication as I pull it apart!

jim..

[jimnielsen]

some disassembly..

At least the cam and balance belts are both in one piece! Engine seems to be able to be turned easily enough by hand, pistons look ok, looking down the sparkplug holes.

Q1. why does this engine have the solid metal cam wheels and the engine in my Q4 has the pretty ones with the holes? Were the holey ones used after a certain date? I don't want to use these solid ones as they are ugly and i bet heavy..At least someone has kindly written on the gears which one is the exhaust and the inlet!

Q2. On my current Q4 engine the bolt on the end of the crankshaft is left hand thread - is this always the case? I am concerned that this bolt head does not protrude all the way out of the metal plate (in the pic) probably because there is too thin a washer under it? Are they always like this?

jim..

[wrinx]

Mine has the solid wheels too...I thought this was standard, so I think yours may have had them changed. Probably from a Fiat Coupe.

As for the crank nut, mine was a lefty thread and they will be all the same I think. Can you get a thin walled socket in there?

[wrinx]

Confirmed - p/n 7691885 is for a Coupe or Delta.

wrinx

[colibry]

hm... bouth of my Q4 have originaly cam wheels with holes. i see solid ones for the first time

[jimnielsen]

Yes, and I am certain that the cam wheels with the holes were supplied as original equipment on my current engine as they had never been off the cams before! But the solid one are horrid!

and no - there is no room for a thin walled socket - but i think all will be ok in that regard..

[AlfaJack]

That timing wheel will pull off now that the 4 bolts are out so you can see the whole bolt head, just wobble it off the same as the aux pulley - all left hand threads (I have struggled enough to have this engrained in my mind)

I have the holey cam wheels too but on the other Q4 I had they were solid. That was 1994 car.

[jimnielsen]

Thats right Jack! I remember now - I am glad that I didnt 'try to take it off with the timing wheel still in place!!!

[SteveNZ]

In my experience its nothing more than lucky dip as to what cam wheels you end up with. I have a Lancia Dedra 2L 8V motor with the holes in it and the 16V style "round" tooth belt too. Some 16V's apparently got the 8V square tooth belt/wheels too, its listed in the parts manual for early Thema's.

[Evodelta]

The cam pulleys with holes in were introduced for the integrale Evo 2 which was around the same time they were letting Alfa have some of the engines, so they will be a mix of old and new.

Does the Q4 head have a smoothish cast finish or the crosshatched one of the Evo 2 onwards (or both)?

The first 16v engines introduced in (89-90?) had same kind of tooth form on the cambelt that the 8v engines had, it proved to be no good and after a few snapped prematurely the whole lot were recalled and a new trapezoidal tooth belt with matching pulleys was fitted.

[Brul(tm)]

The Q4 I took appart was from '92 and has the closed cam wheels. My Q4 is produced in december '94 and has the open cam wheels.

Regards,
Marc

[wrinx]

Mine is 1993, closed wheels.

wrinx

[Q4Jan]

My widebody also has the open version.

And i suspect all widebodys will.

[jimnielsen]

Well there was an engine under all that stuff..

anyone care to hazard a guess as to the year of car that engine would have come from, from the engine number?

[Brul(tm)]

This is the only thing I could find. M4 version, don't know when they where used.
For this you need the chassis number I guess.

Regards,
Marc

[Brul(tm)]

*double*

[wrinx]

...anyone care to hazard a guess as to the year of car that engine would have come from, from the engine number?

Mine is 32072 for a 1992 (not 1993 as stated above!) so yours at 1442476 is obviously much later ...but if the engine numbers included Coupes and Deltas things will get very muddy!

wrinx

[jimnielsen]

well my dec 1994 build one is 1597341...

[wrinx]

Ah....guess the numbers are for all Fiat groups cars then

wrinx

[Juan AR155Q4]

1474487 from mid 93, with open cams wheels.
I do have form another Q4 (don?t know the year, 2 closed cams wheels, which I turned them in adjustable with some machining. I could post some pics if anybody wants.