rebuilding engine

[number_33]

Seems that my engine decided to end its life today. So i did some research and of course need some good advice and find out what i can do to get my engine running back again.

I am planning to stay NA and of course going for stronger life on the engine, so forging will be my main aim and rebuilding the bigport is what i am thinking but if anyone has a good idea or the right direction, do shade some light.

I came across the toda kit and below are the items.

-toda forged pistion set ( 82mm 20mm pin)
-camshafts
-cam pulleys
-inner shim kit
-metal head gasket 0.6mm

I understand everything and look for what to get for this kit but something came across my mind that makes me still thinking is that just enough to safely keep my engine to last. so here some questions

1. the piston says (82mm and 20mm pin), does this fit on a bigport 93kw? Do i need to machine the head or block to fit it?

2. conrods, do i use back stock conrods? toda doesn't sell conrods, so if going forgies what should i get and what measurement?

3. crank, do i use back stock crank? i do not plan to incrase the displacement, but i see that the pistion if using the (82mm 20mm pin) some how increase the displacement like to 1627cc. So using stock crank, or do i balance, or go for something solid?


I am just guessing that piston, conrods, and crank are making me to think carefully, is that all or maybe there is some more that i need to look deeper into also?

[slide86]

what actually happened to your engine?

[Fozz]

Do u need to rebuild the whole motor? what exactly happened/broke?

if your on a budget check out spool products they are pretty cheap but dunno what the quality would be like on them

[number_33]

the engine lost a compression on a cyclinder after a hard thrashing, so i just thought myself better to rebuild it. i mention at the start, is there other way that the engine can decided to end its life?

[number_33]

i was just thinking if i am gonna spend money, myself just getting it done properly rather then saving here and there and in the end maybe it will come back and haunt me again. LOL

[slide86]

there are heaps of ways an engine can shit itself/

what was the compression reading after the comp test.

you wont need to go forged, thats probably overkill for your application. unless you want to have a screamer, then it wont be as streetable as you would probably like.

just use factory items, cranks rods and pistons, rings. it depends what the damage is

[number_33]

right now, i know i planning for to go track when time is permited, so why not build a proper engien then just a normal factory, if rebuild a stock engine myself i just get a new engine, so better to just move up one step to see where i can go. =)

[Jazz9]

hmm,

If you are putting forged pistons, then you need to rebore the block, allways buy the pistons AFTER pulling down the block.... you never know the full history of a motor - it may have been rebuilt once and allready have the first oversized pistons in it. This will require you to get 2nd oversize pistons.

Long story short ... pull down motor -- check the bores, rods, crank and then pick a power level --- then we can tell you what you need.

When building a good NA block the main thing is the COMPRESSION RATIO --- what are the toda item? wisco do a 10.5-1 compression ratio based on stock HG.

I have heard good things about spool rods - I am about to put a set in a very very very very angry NA 4age!

Glen

[number_33]

hmm, thanks for the advice

right now, my car engine is a stocko, nothing has been done to it, so i assume everything will be base on factory.

As for the toda items i when to the website and get the info, and post here so you guys can help out, cause i really do not know much that is why i am trying to learn more from the feedback.

HIGH COMPRESSION FORGED PISTON KIT (ø82.00mm ø20mm pin 1627cc CR with stock gasket 11.3 : 1 )
Shim kit (1.5-3.0mm) <- i think i need to make a choice, so i do not know the factory shim size and wat size should i get to see improvement

HIGH STOPPER METAL HEAD GASKET (thickness0.6mm bore size ø82.5mm)

i list above all the parts that has to do with the engine block, do i need to list out the cam, cam gears, rod and crank?

[Jazz9]

Assuming that the motor is stock, you still need to check what condition the bore is in... If it has large scores in them - mainly check the bore where there is no compression, it may have broken a ring and deeply scored the bore - then you need oversize pistons.

I would always recommend going 1 oversize in the pistons, in your case 82.5mm i believe - check this when the motor is apart. I would drop the block into a engine builder and ask what oversized pistons you need. Then buy the strongest rod/piston combo that your budget allows.

PM me your phone number if it isnt clear ---- dont buy anything until it is.

Glen