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SC on a Duke - will it blow even if you respect the the Limit of 4500rpm ? by Fieromaniac
Started on: 09-11-2007 09:47 AM
Replies: 42
Last post by: uhlanstan on 09-19-2007 12:37 AM
Fieromaniac
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Report this Post09-17-2007 12:42 PM Click Here to See the Profile for FieromaniacClick Here to visit Fieromaniac's HomePageSend a Private Message to FieromaniacDirect Link to This Post
 
quote
Originally posted by jscott1:
but most of the young folks on here .........


good that iam old iam 30 but married with children that rises my effective biological age dramatically

------------------
1984 Fiero Sport
1987 Fiero <- Ethanol powered Batmobile
1984 Fiero SE
2002 Kia Spectra <-LPG powered family car

*** nuclear winter cures global warming ***

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FieroMonkey
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Report this Post09-18-2007 06:32 PM Click Here to See the Profile for FieroMonkeySend a Private Message to FieroMonkeyDirect Link to This Post
 
quote
Originally posted by 30+mpg:







This one is mine. It is a duke block, but the head, crank, rods, valves, cam and pistons are all Superduty. The turbo was running about 5-7 lbs. It scooted REALLY well, but I didnt push it very hard because it was dumping too much fuel and wasn't running right. I took off the turbo and have been running it without the turbo and with a holly TB instead of the pro injection it had when I got it just for moving the car around to stretch its legs occasionally.

My understanding is that even with beefier internals, stock duke blocks are way too thin and have a habit of breaking apart at the deck under boost for too long, or your main caps break apart. I would just drive it until it fell apart if it weren't for the fact that I do not want to hurt the SD internals.

I have a spare Superduty block, head and some SD interal parts that I plan to put together one of these days when I have the spare time and money.

My prediction is that with stock internals and block under boost, the first thing you will break (if you don't blow the head gasket first) is you will collapse your pistons, or your rods will twist and snap in the middle /skinniest part of the rod. If for some reason the pistons, gasket, and rods don't break, count on your main caps or deck giving out on you.

I have had my SD block beside a stock block before and the differences are VERY noticeable. You look at the stock block and say to yourself "How does this thing run at all...

[This message has been edited by FieroMonkey (edited 09-18-2007).]

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uhlanstan
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Report this Post09-19-2007 12:37 AM Click Here to See the Profile for uhlanstanSend a Private Message to uhlanstanDirect Link to This Post
DO not waste time with supercharged or turbo duke years ago many fieros were set up with turbo charger s results many blown engines,s10 head is way to go with mild performance products,duke will perform close to newer engines,,but race engine many here try and many have blown engine. I like the duke but just a waste of money unless you spend mucho dinero to make strong,go to tripod for advise and other sites I have only been on pennocks for 6 months but read for long time the pennock s trail is litered with blown dukes!! use gearing and modifications,build 130 hp duke the head is the key here.. you can balance crank and may get another 500 miles from turbo or super charge duke,if you take it easy you defeat purpose of hi output engine
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