Modifying combustion chambers- DONE SOME (PICS)
#41
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Stav- It was a joke but I can certainly think of a few times you have changed your mind on things half way through a project.
This is by far the best move though, VERY little cash involved, and obviously much more fun as your doing it yourself
Budget builds are always the best ones well so far anyway
This is by far the best move though, VERY little cash involved, and obviously much more fun as your doing it yourself
Budget builds are always the best ones well so far anyway
#43
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Ian-
Cheers mate your right of course, at least it doesnt lose too much power as it gets hot like some things, and ill have to soldier on with the tools i got, im skint at mo
Idve loved to do a before and after test, but because i had no idea on the engines condition i had to take it to bits anyhow. Tons of people in the states just run the engine bog stock with the turbos on running 10-12psi (and running 10.5quarters like that ), so might be able to get some slight comparison.
All im expecting is hopefully to be able to safely run more boost on pump fuel, as its revs that kills em. They seem to be able to take decent boost, 20psi+, on stock internals if you can keep the revs down and stop the det (ie by running race fuel if stock compression).
Dan-
Were gonna do that to one of Gregs Subaru heads as he has fucked one of em when taking it apart, so gonna chop it up to have a good look at it
Cheers mate your right of course, at least it doesnt lose too much power as it gets hot like some things, and ill have to soldier on with the tools i got, im skint at mo
Idve loved to do a before and after test, but because i had no idea on the engines condition i had to take it to bits anyhow. Tons of people in the states just run the engine bog stock with the turbos on running 10-12psi (and running 10.5quarters like that ), so might be able to get some slight comparison.
All im expecting is hopefully to be able to safely run more boost on pump fuel, as its revs that kills em. They seem to be able to take decent boost, 20psi+, on stock internals if you can keep the revs down and stop the det (ie by running race fuel if stock compression).
Dan-
Were gonna do that to one of Gregs Subaru heads as he has fucked one of em when taking it apart, so gonna chop it up to have a good look at it
#44
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Originally Posted by foreigneRS
Originally Posted by Stavros
Lloyd- Copying what? I dont even know what a crossflow (if you mean old ford one) head looks like.
thats why they were termed crossflow i seem to recall
most heads have intake one side and outlet the other as its more efficient as hot exh manifold isnt heating the inlet manifold killing performance ....
although there are some exceptions to this like r5 gt turbo ,mini
#45
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We're doing a stock 302 twin turbo at the mo steve, we just fitted it in an E21 beema I wouldn't worry to much on getting the compression down, especially if you dont intend to rev it hard
#46
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Originally Posted by Danny B
We're doing a stock 302 twin turbo at the mo steve, we just fitted it in an E21 beema I wouldn't worry to much on getting the compression down, especially if you dont intend to rev it hard
Not gonna rev it hard, 5k tops if i can, but its not revs where comp matters really, its at peak torque, and as they dont like revs i plan to make up for that with as much boost as i can get away with!
2bar all the way till the block cracks 2secs later
Im massivley tempted with an autobox too, but do NOT understand how they work (ie what one to get and when they choose to change up or down a gear, or whatnot), so i think ill be needing your help
#47
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C4 box which manual valve body, gives you 3 gears manual shifter without lifting of clutching, run a high stall convertor so its into boost when it locks and your away.
Send me a link to who you got the turbo kit from, I know what make it is so wont mention before it gets commented on I need another kit.
Send me a link to who you got the turbo kit from, I know what make it is so wont mention before it gets commented on I need another kit.
#48
Originally Posted by Stavros
Im massivley tempted with an autobox too, but do NOT understand how they work (ie what one to get and when they choose to change up or down a gear, or whatnot), so i think ill be needing your help
Was watching overhaulin or some other programme the other night, and they put this "convertor" inside the bellhousing of the box on the mainshaft - how does that work?
#49
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Rich,
The tourque convertor is a fluid filed clutch basically. The housing of the torque converter is bolted to the flywheel of the engine, so it turns at whatever speed the engine is running at. The fins that make up the pump of the torque converter are attached to the housing, so they also turn at the same speed as the engine. The pump inside a torque converter is a type of centrifugal pump. As it spins, fluid is flung to the outside, much as the spin cycle of a washing machine flings water and clothes to the outside of the wash tub. As fluid is flung to the outside, a vacuum is created that draws more fluid in at the center. The fluid then enters the blades of the turbine, which is connected to the transmission. The turbine causes the transmission to spin, which basically moves your car.
The tourque convertor is a fluid filed clutch basically. The housing of the torque converter is bolted to the flywheel of the engine, so it turns at whatever speed the engine is running at. The fins that make up the pump of the torque converter are attached to the housing, so they also turn at the same speed as the engine. The pump inside a torque converter is a type of centrifugal pump. As it spins, fluid is flung to the outside, much as the spin cycle of a washing machine flings water and clothes to the outside of the wash tub. As fluid is flung to the outside, a vacuum is created that draws more fluid in at the center. The fluid then enters the blades of the turbine, which is connected to the transmission. The turbine causes the transmission to spin, which basically moves your car.
#55
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Originally Posted by SapphyMike
How easy to find / cheap are the 302's and 351 engines?
IIRC we left an old 351C at the old house when we moved out
Paid 300odd (350maybe?) for the 302W and 50, yes 50 quid for the 351W And that came with 8 brand new forged pistons in a box, and a full gasket set
What you got in mind?
#58
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Mike- There a lot of easier and cheaper to get engines than one of them for a bit of learning mate!
Dan- Kent/Crossflow, Pinto, Essex, Windsor, Cleavland, etc etc etc, all Iron heads
Dan- Kent/Crossflow, Pinto, Essex, Windsor, Cleavland, etc etc etc, all Iron heads
#61
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fudge- every single one of those engines were still in production in 1981
well that makes a 302 or 351 a pain as they wont fit in anything easy, etc etc.
surely anything common and cheap, depends what you planning on experermenting with, wether you want n/a or turbo, or what.
2.8 cologne would be kinda interesting as they have piss poor exhaust ports (4 for 6 cyls!) and bet with some surgery they can be improved a good bit.
i dont know n/a tuning that brilliantly so all stuff i wanted to expererment with is related to turbos.
i refuse to show my carbs and inlet manifold set up as they way we had people reckoning what im doing now is a bad idea (even though they had no idea what they on about) theyd REALLY not like my inlet/carbs setup, even im not sure its a good idea
Originally Posted by SapphyMike
such as what would you recommend Steve?
bearing in mind I want to be able to put it in a car and test afterwards..
bearing in mind I want to be able to put it in a car and test afterwards..
surely anything common and cheap, depends what you planning on experermenting with, wether you want n/a or turbo, or what.
2.8 cologne would be kinda interesting as they have piss poor exhaust ports (4 for 6 cyls!) and bet with some surgery they can be improved a good bit.
i dont know n/a tuning that brilliantly so all stuff i wanted to expererment with is related to turbos.
i refuse to show my carbs and inlet manifold set up as they way we had people reckoning what im doing now is a bad idea (even though they had no idea what they on about) theyd REALLY not like my inlet/carbs setup, even im not sure its a good idea
#62
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Originally Posted by Stavros
fudge- every single one of those engines were still in production in 1981
well that makes a 302 or 351 a pain as they wont fit in anything easy, etc etc.
surely anything common and cheap, depends what you planning on experermenting with, wether you want n/a or turbo, or what.
2.8 cologne would be kinda interesting as they have piss poor exhaust ports (4 for 6 cyls!) and bet with some surgery they can be improved a good bit.
i dont know n/a tuning that brilliantly so all stuff i wanted to expererment with is related to turbos.
i refuse to show my carbs and inlet manifold set up as they way we had people reckoning what im doing now is a bad idea (even though they had no idea what they on about) theyd REALLY not like my inlet/carbs setup, even im not sure its a good idea
Originally Posted by SapphyMike
such as what would you recommend Steve?
bearing in mind I want to be able to put it in a car and test afterwards..
bearing in mind I want to be able to put it in a car and test afterwards..
surely anything common and cheap, depends what you planning on experermenting with, wether you want n/a or turbo, or what.
2.8 cologne would be kinda interesting as they have piss poor exhaust ports (4 for 6 cyls!) and bet with some surgery they can be improved a good bit.
i dont know n/a tuning that brilliantly so all stuff i wanted to expererment with is related to turbos.
i refuse to show my carbs and inlet manifold set up as they way we had people reckoning what im doing now is a bad idea (even though they had no idea what they on about) theyd REALLY not like my inlet/carbs setup, even im not sure its a good idea
i like the idea of a tt 351 in a mk2 granada..
the 2.8 Cologne has Siamese ports hence why they're so shit lol
#65
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Originally Posted by Dan@FastFord
just had a thought, and thats for the home diy'er head porting peeps.
all ford stuff uses alloy heads, so a dremmel wont be much use as the stone will clog very quickly
all ford stuff uses alloy heads, so a dremmel wont be much use as the stone will clog very quickly
#66
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Originally Posted by Big Will 85
Originally Posted by Dan@FastFord
just had a thought, and thats for the home diy'er head porting peeps.
all ford stuff uses alloy heads, so a dremmel wont be much use as the stone will clog very quickly
all ford stuff uses alloy heads, so a dremmel wont be much use as the stone will clog very quickly
that will be done with a dremmel too lol
#67
Testing the future
Originally Posted by stage 3 muppet
Originally Posted by foreigneRS
Originally Posted by Stavros
Lloyd- Copying what? I dont even know what a crossflow (if you mean old ford one) head looks like.
thats why they were termed crossflow i seem to recall
most heads have intake one side and outlet the other as its more efficient as hot exh manifold isnt heating the inlet manifold killing performance ....
although there are some exceptions to this like r5 gt turbo ,mini
less of the please mate
i was right in the first place i think you'll find. the predecessor to the ford kent engine (commonly called the crossflow as it was the first of the mainstream fords to use a crossflow cylinder head design where the air flows in one side and out of the other) had a non-crossflow cylinder head as was common before the late 60's with both inlet and exhaust on one side.
since then, partly as you say due to not wanting to heat the inlet too much with the exhaust gasses, but also due to improved port routing creating better scavenging, most cylinder heads have been of the 'crossflow' design
see wikipedia mate. i know it's not definitive, but in this case, like me, it's correct
http://en.wikipedia.org/wiki/Crossflow_cylinder_head
#68
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Originally Posted by Stavros
i refuse to show my carbs and inlet manifold set up as they way we had people reckoning what im doing now is a bad idea (even though they had no idea what they on about) theyd REALLY not like my inlet/carbs setup, even im not sure its a good idea
#69
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No mate, I WISH I had the spare cash to buy a 4barrel converted to blow thru and a 4barrel manifold, and they fine anyhow, turbo cars have been proven to do well over 1500bhp@wheels on a single 4barrel blow thru with no nitrous
Thatd not be expensive, but still about 500quid for the carb (delivered), 150odd for the manifold, and 150odd for the carb hat.
Mines "different" TBH it might work just as well, it might not, ill do some more sums If it does its a winner, cost me 100quid!
Thatd not be expensive, but still about 500quid for the carb (delivered), 150odd for the manifold, and 150odd for the carb hat.
Mines "different" TBH it might work just as well, it might not, ill do some more sums If it does its a winner, cost me 100quid!
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Originally Posted by Stavros
No mate, I WISH I had the spare cash to buy a 4barrel converted to blow thru and a 4barrel manifold, and they fine anyhow, turbo cars have been proven to do well over 1500bhp@wheels on a single 4barrel blow thru with no nitrous
Thatd not be expensive, but still about 500quid for the carb (delivered), 150odd for the manifold, and 150odd for the carb hat.
Mines "different" TBH it might work just as well, it might not, ill do some more sums If it does its a winner, cost me 100quid!
Thatd not be expensive, but still about 500quid for the carb (delivered), 150odd for the manifold, and 150odd for the carb hat.
Mines "different" TBH it might work just as well, it might not, ill do some more sums If it does its a winner, cost me 100quid!
#75
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Ive seen this supercharged Lexus V8 one if thats what you mean?
www.rats.no/omega_tg.html
Its cool, not exactly VFM tho.
www.rats.no/omega_tg.html
Its cool, not exactly VFM tho.
#77
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That engine alone would cost what, 20k+ to build? 30k+ maybe?
Could buy a n/a big block crate engine dyno'd at 950bhp for 10k.
Could build a 1500bhp+ turbo 302 or 351 for under 10k i reckon, and itd barely be trying either.
Not stock block tho, standard windsor blocks shit themselves and split in two at less than half that power.
Could buy a n/a big block crate engine dyno'd at 950bhp for 10k.
Could build a 1500bhp+ turbo 302 or 351 for under 10k i reckon, and itd barely be trying either.
Not stock block tho, standard windsor blocks shit themselves and split in two at less than half that power.
#79
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Id not wanna go RB30 at 1000bhp+ if i had a choice of other engines, even a 2JZ is better, never mind just using bigger engines.
Were going more than slightly off topic now anyhow.
Were going more than slightly off topic now anyhow.
#80
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indeed we are, but then this is pf, when does anything stay on topic, unless someone is bitching about someone else lol.
so, to keep on but off topic slightly, what engine would you suggest I start to take apart? lol
so, to keep on but off topic slightly, what engine would you suggest I start to take apart? lol