Most Cost Effective Way Of Doing a Bottom End?
Discussion
All this talk of big power and forged internals has got my apetite going, I know ive said since day one I wont do forged internals as dont think will need them (clearly I was wrong!) and as im going to be running close to the limit its now on the list to do.
However whats the most cost effective way of doing it, taking the current one out stripping down, replacing the parts, re-building/balancing and putting back together.
Or
Simply buy a pre built bottom end from the US or U.K, fit that and sell the old stock item off?
Just curious on peoples experiences as ive never done anything engine internal wise in the past and dont want to start making mistakes!
However whats the most cost effective way of doing it, taking the current one out stripping down, replacing the parts, re-building/balancing and putting back together.
Or
Simply buy a pre built bottom end from the US or U.K, fit that and sell the old stock item off?
Just curious on peoples experiences as ive never done anything engine internal wise in the past and dont want to start making mistakes!
Depends how long you can be without your car I guess? The original motor has got to come out either way, so it's an extra bit of time in the middle while it gets rebuilt or straight in with a replacement. Don't know how saleable a stock short motor is?
Edited by LawrenceF on Thursday 19th November 18:24
ringram said:
IMO option 2 and stroke it at the same time 
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
Me too.
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
You can get some good prices on shortmotors from the states, subject to Forex rates of course.
LawrenceF said:
Depends how long you can be without your car I guess? The original motor has got to come out either way, so it's an extra bit of time in the middle while it gets rebuilt or straight in with a replacement. Don't know how saleable a stock short motor is?
There plenty of peeps blowing up short motors with SC's so should be saleable.Edited by LawrenceF on Thursday 19th November 18:24
MyM8V8 said:
ringram said:
IMO option 2 and stroke it at the same time
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
Me too.
You can get some good prices on shortmotors from the states, subject to Forex rates of course.
Any good websites that are worth a look that sell built bottom ends?
after_shock said:
MyM8V8 said:
ringram said:
IMO option 2 and stroke it at the same time 
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
Me too.
However... I took it a step further and just replaced the whole engine. Easier to sell the engine as a whole than only half of one. Plus I wanted proper heads on it.
You can get some good prices on shortmotors from the states, subject to Forex rates of course.
Havent I already been through all this ??
Without knowing waht you want, its impossible to say.
Cheapest option ?? Just fire a set of forged rods and pistons into your existing block, and use that. If the bore is in good order, get a set of pistons to suit that. A quick hone will clean it up so the rings can bed in.
You will not get a cheaper, strong setup than that, and will be capable of withstanding the power most people here would throw at it with no real problems.
Labour and other small parts aside, that could cost as little as about £1300 in parts. ( rods/pistons/rings and a hone )
Without knowing waht you want, its impossible to say.
Cheapest option ?? Just fire a set of forged rods and pistons into your existing block, and use that. If the bore is in good order, get a set of pistons to suit that. A quick hone will clean it up so the rings can bed in.
You will not get a cheaper, strong setup than that, and will be capable of withstanding the power most people here would throw at it with no real problems.
Labour and other small parts aside, that could cost as little as about £1300 in parts. ( rods/pistons/rings and a hone )
Thats all very well in theory mate.
But by the time you have shipped the block around the place, paid UK labour rates, machining and part rates its much cheaper to import a full block or engine and sell the one you have off.
Shipping is about $600USD
My basic engine swap over cost about £5500 for a complete 440 cube darton sleeved LS7. (plus fitting charges etc)
If you are DIY'ing the build and importing the parts from the US to suit Id agree with you. I did do some sums myself prior to going the way I did.
But by the time you have shipped the block around the place, paid UK labour rates, machining and part rates its much cheaper to import a full block or engine and sell the one you have off.
Shipping is about $600USD
My basic engine swap over cost about £5500 for a complete 440 cube darton sleeved LS7. (plus fitting charges etc)
If you are DIY'ing the build and importing the parts from the US to suit Id agree with you. I did do some sums myself prior to going the way I did.
stevieturbo said:
Havent I already been through all this ??
Without knowing waht you want, its impossible to say.
Without knowing waht you want, its impossible to say.
If you have been throught ive not read it on here, cant see everything!
Being honest not sure what I want yet just at the start of doing research into it, once know which is the most cost effective way of going (strip down and re-build or buy built) will then decide which way to go once decided on which charger to use, just gives me a rough indication of cost and how to go to the next stage.
SimonV8ster said:
after_shock said:
....will then decide which way to go once decided on which charger to use, just gives me a rough indication of cost and how to go to the next stage.
I thought you were already supercharged ??
I am but its not intercooled and only a baby charger so needs changing

Yeah arrived in a wooden crate. It was from Ed at VA Speed. It helped that it was $2:£1 at the time though.
Gareth is also getting a Darton sleeved engine, but from HKE.
Total cost with clutch, intake, injectors etc was $14k less the £2k for my ls2.
But do your sums I spent a little extra on fitting etc. Then someone will need to tune, or help tune it etc. Though a few have a good handle on DIYing that with demonstratably better results than the local workshops.
Look for Gelf's l92 headed setup tomorrow. He should hit around 420+rwhp if he has it tuned right.
Gareth is also getting a Darton sleeved engine, but from HKE.
Total cost with clutch, intake, injectors etc was $14k less the £2k for my ls2.
But do your sums I spent a little extra on fitting etc. Then someone will need to tune, or help tune it etc. Though a few have a good handle on DIYing that with demonstratably better results than the local workshops.
Look for Gelf's l92 headed setup tomorrow. He should hit around 420+rwhp if he has it tuned right.
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