Will I get 1800 cc if I put a 1.8 crankshaft and rods into a 1.6?

Thanks!

 

they dont fit mate,crank is completely different,and chocolate so i've heard

 

But Ford did actually achieve the longer stroke of the 1.8 through different crank and rods?

 

not turbo spec tho may not cope with boost pressures

 

Having seen the state of the rods in a mates 250bhp 1.9 CVH RST I wouldn't recomend it

 

i have a long throw steel crank and steel rods with forged pistons to achieve 1800cc in mine and it is spot on makes 230 bhp and 252 ft/lb of torque at just 14 psi and so far has been ultra reliable. it was expensive to build though

 

bet it was how much was a steel crank?????

 

Ł1475 from Farndon Engineering

 

least its a bomb proof bottom end

 

OK, but has anyone tried to use std 1800 cvh crank and rods from a Sierra?

 

I've got a Ferriday 1820cc low comp engine on S8 management in my XR2T, Crank and block is a standard Ford 1800cc with Fardon steel rods and 7.5:1 accralite pistons (it's the 1 the Ben Birch from retro ford had build for his old RWD XR2 project), Been running 13psi with no problems, It made 191bhp and 180lbs/ft on 8.5spi, The block on the 1800 is actually taller by about 10mm or so. Just fitted a T34 on a .48 cossie housing, will be going upto 18-20 psi soon as i get the downpipe fitted so should be up the top end of the 200's Bhp.

Only problem i've had was the head lifting when it hit the 6500 rev limiter in 5

to be honest though i only went for this engine as i know how much it cost to build and had it at a fraction of the cost

And the rods are supposed to be worse that the standard RST items.

 

Hey, that's some great information, thanks!

 

 

no stardard stuff wont work dont use it

 

My dad did this years back, in NA form. It's a great engine - but a little pointless.

 

A friend of mine uses the Sierra 1.8 crankshaft with forged Wiseco pistons in his 1.6 turbo block. Compression about 8.5:1 and up to 300 hp, 1.5 bar and 7000 rpm. Had no problems yet. Engine was bored out to 81.5

The 1.8 crankshaft fits the block, you just have to do some work on it to provide space for the conrods because of the higher stroke. Didn't ever see a crankshaft that didn't cope with the power. It has always been melted pistons, bent rods, worn bearings but never the crankshaft...

 

So how much will using 1800 crank and rods in a 1600 block increase cylinder capacity?

 

I thought the 1800 CVH had different diamter crank journals to the 1600 so the 1800 crank couldn't be fitted to the 1600 block??

 

me too mate,know the 1600 sump didnt fit on the 1800 bottom end as the journals were too big i think,distant memory but know there was deffo a reason why i didnt use it lol
think the guys that are talking 1800's are great motors must be talking custom cranks or the yank tall block conversions,cos my engine was pretty gutless and have heard they are made of a metal similar in composition to chocolate

 

...

 

so in short mate forget 1800cc unless ur gonna lo comp a 1800 cvh and ad an oil return

 

Will the std 1600 turbo pistons fit the 1800 block by any chance? Or will I need custom made ones?

 

pretty sure the pistons are different,realistically mate if this was a good or cost effective conversion it would have been done to death by now,i just wouldnt waste my time or money as there are other options out there that are tried and tested
at the end of the day you are going to need pistons and rods that will probably have to be custom made and cost a fortune,the sump and pick up pipe are at the wrong end as well on a sierra engine btw,so mods to sump or downpipe required,am sure people tried this years ago on turbo cars and the crank was weak as fook
power engineering stopped making their 1900 cvh as it was working out too expensive for their customers i read somewhere
if you want 1800cc so much go buy a zetec

 

Well, I like to go "different" routes.

If 1600 pistons don't fit, I'll immediately cancel the whole thing. If I have to spend a lot of money on custom ones, I'll rather go ZVH. But unfortunately I don't know yet, whether 1600s do fit or not. At least I don't know for sure.

That wouldn't be a problem for me.

I've also heard that these engines are more likely to fail then a 1600. But such rumours usually don't put me off until I blow one up myself...

I don't want 1800cc, I'd take 1900, 2900 or 7500 as well.

 

@Peter: Seen Hauke's S1 RST on a meeting? Probably Marktheidenfeld 2004?
Or read anything he wrote on www.ford-escort.de @ the forum?

This car?

1.6 RST bottom end
1.8 Sierra crankshaft
Custom made Wiseco pistons
Sierra 4x4 WM-Management

You'll just have to try which conrods you'll need with the higher stroke and then what exact measures of your pistons you'll need. Don't bore it up too much. 1.8 +x and enough of boost should be more power than your gearbox can cope with

 

So did he also increase bore? Do you know how much?

 

ca. 81.5 mm

About 1.850 ccm