Boosted engine build

[jsdvtr]

Looking at building up a boosted engine with forged stuff, Will i need to go for uprated stuff over standard becasue of the extra power?

What parts should i change apart from the obvious stuff?

Is there any guides of how to build up a engine, etc?

[Rob_McLav]

depends on what power u r going for?

[raunchz]

What do you mean 'usual stuff'?

Be more specific!

General guide on building an engine really. Major criteria for succes is the quality of machining, correct clearances and accurate torquing of bolts.

[jsdvtr]

Headgasket, cambelt, waterpump, big end bearings, main bearings, stem seals.

Well high boost run something like 18-20psi. 300bhp atw would be good but depends on turbo.

Its things like torque settings id be unsure about and where to start, having everything timed up correctly.

[blackie_2k5]

timing and stuff is easy, its the little things that ppl dont know about when building an engine

if youve not done... and dont really know, unless your prety confident wouldnt you rather someone else done it for you? as itd be alot of money to blow up...

if confident get yourself an engine building book, its all pretty much the same in majority, just some engine have extras etc, vtr/s engines are pretty simple to work on

[jsdvtr]

Originally Posted by blackie_2k5

timing and stuff is easy, its the little things that ppl dont know about when building an engine

if youve not done... and dont really know, unless your prety confident wouldnt you rather someone else done it for you? as itd be alot of money to blow up...

if confident get yourself an engine building book, its all pretty much the same in majority, just some engine have extras etc, vtr/s engines are pretty simple to work on

Well its something ive always wanted to do. I could maybe get it checked over by someone when ive built bottom end.

Places by me charge about £600 for engine build.

[Gareth_R]

You can't really check it over after

Things like torque settings and measuring clearances will be done as you build it up

[jsdvtr]

Is there any specific or special tools i'd need?

[Quick]

If you are building an engine for the first time, I would be making a high spec high power boosted one!

Decent set of tools with torque wrench etc....

[raunchz]

Feeler gauges
Torque wrenches (one to do small torques, and one for bigger - so maybe a 1/4" one and a 3/8" or 1/2" one)
Angle gauge
If got arp rod bolts then ideally a stretch gauge
Good set of sockets and ratchets
Engine stand
Valve spring compressors
Piston ring compressor
Set of good quality files
Good set of punches
Tap and die set



Can't think of much else right now

[Gareth_R]

plastigauge

[Frenchcarp]

Originally Posted by raunchz

Feeler gauges
Torque wrenches (one to do small torques, and one for bigger - so maybe a 1/4" one and a 3/8" or 1/2" one)
Angle gauge
If got arp rod bolts then ideally a stretch gauge
Good set of sockets and ratchets
Engine stand
Valve spring compressors
Piston ring compressor
Set of good quality files
Good set of punches
Tap and die set



Can't think of much else right now

Spanners?

[raunchz]

Originally Posted by Frenchcarp

Spanners?

And spanners

[jsdvtr]

Right, i have found someone who will build me a engine cheap who used to be a mechanic at citroen and has built a few engines that i know off. Saves me building it up and getting it wrong.

Things im unsure of are boring the block, should i stay standard size?

What size headgasket and compression ratio to go for?

[raunchz]

IMO I'd stay standard size

You going forged pistons? What head? Jp4 or j4?

[adzvtr]

if running forged low comp pistons, and the head hasnt been skimmed then a standard size head gasket is fine.

boring all depends wether or not you go for standard size or oversized pistons.

but you will atleast want to hone the bores.

[jsdvtr]

Originally Posted by raunchz

IMO I'd stay standard size

You going forged pistons? What head? Jp4 or j4?

Well hopefully forged rods and pistons, j4 head.

Originally Posted by adzvtr

if running forged low comp pistons, and the head hasnt been skimmed then a standard size head gasket is fine.

boring all depends wether or not you go for standard size or oversized pistons.

but you will atleast want to hone the bores.

Ye i was thinking just a hone with standard size bore.

[blackie_2k5]

go off the condition of your block on strip down to what size you choose. If theyre in good shape use standard size with a light hone

[KamRacing]

You could take the opportunity to fit a stroker kit

[toxic]

have a go i am all good fun