| Sponsor Message |  |
|
|
Users viewing this topic:
none
|
|
Login  | |
|
Finally got the engine totally in bits - Sep. 4 2006 1:55:39
|
|
|
yorkshirespud
Posts: 500
Joined: Nov. 4 2003
From: United Kingdom
Status: offline
|
Me and dodgy Frank finally fully dissasambled the motor from the truck down to a bare block yesterday, removing the harmonic balancer, cam, con rods and pistons. The pistons were mostly ok except for one which had a lot of blow by and was satrting to score it's cylinder a bit, nothing too bad tho. All of the shells were starting to show scoring, and about half of the rings had broken in half. Good thing I yanked it for building, it only had a few miles left in it before starting to go bad I think!!
Anyway, after lookin at the con rods, I reckon a new set is on order. The block looks fine, it'll be good after an overbore. I'm not quite sure what to do with the crank tho, it has some light scoring. Now, seeing a new crank (normal duty £250, 600 odd for high perf) isn't silly money, is it worth having the old one reground or not? Comments?
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 9:22:12
|
|
|
dj
Posts: 15904
Joined: Nov. 1 2003
From: United Kingdom
Status: offline
|
best to let some engine builder have a look at it nick,we have bradford grinders over here that do regrind and new shells and even harden n balance and lighten yer crank if its in decent shape for less money than a new crank,and your new one if ordered might need hardening and balancing anyways.keep us updated fella.
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 9:58:21
|
|
|
art b
Posts: 9903
Joined: Apr. 21 2004
From: some where near bling
Status: offline
|
nice work there fella, cant be easy an engine that big...got any pics of the carnage!
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 10:02:34
|
|
|
hemiguy
Posts: 9864
Joined: Feb. 7 2005
From: Surrey - Now Living in Bradford
Status: offline
|
I'd say have the crank reground mate, sutton rebore should be able to do hat for ya.
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 19:00:53
|
|
|
neilaura
Posts: 610
Joined: Mar. 15 2004
From: USA
Status: offline
|
Sutton Rebore, that brings back memorys. Does Tony Densham still own it?.
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 20:02:51
|
|
|
fin170703
Posts: 2015
Joined: Apr. 22 2005
From: United Kingdom
Status: offline
|
i had my block bored .030" over for about £120 and my crank reground .040" under for £40 .
i would say it depends on the type of power you'll be banging out . my engine will be good for about 400 bhp and thats about the limit of my cast crank shaft , any more and i would have had to go for forged ( although i did go for forged pistons and con rods )
what sort of power you after , if your thinking high output then if you can stretch to it go for forged ,.
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 20:07:03
|
|
|
retrorob
Posts: 799
Joined: Nov. 24 2005
From: United Kingdom
Status: offline
|
yorkshirespud you from High Wycombe mate?
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 4 2006 22:55:00
|
|
|
yorkshirespud
Posts: 500
Joined: Nov. 4 2003
From: United Kingdom
Status: offline
|
quote:
Originally posted by fin170703
i had my block bored .030" over for about £120 and my crank reground .040" under for £40 .
i would say it depends on the type of power you'll be banging out . my engine will be good for about 400 bhp and thats about the limit of my cast crank shaft , any more and i would have had to go for forged ( although i did go for forged pistons and con rods )
what sort of power you after , if your thinking high output then if you can stretch to it go for forged ,.
Aiming for 450hp initially, maybe more later
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 5 2006 10:49:48
|
|
|
art b
Posts: 9903
Joined: Apr. 21 2004
From: some where near bling
Status: offline
|
yep thats in bits,your well on the way now....just need enough bucks im sure the original budget, will be overrun!!!!! he he he
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 5 2006 10:56:03
|
|
|
yorkshirespud
Posts: 500
Joined: Nov. 4 2003
From: United Kingdom
Status: offline
|
quote:
Originally posted by art b
yep thats in bits,your well on the way now....just need enough bucks im sure the original budget, will be overrun!!!!! he he he
The only bit left I'm umming and awwing about is the crank. It's (presumably) a stock cast item. After some reading, it appears new cast cranks are 250ish, with forged items coming in at about 650 (pounds/dollars).
At first some reading on the tinternet seemed to suggest that cast cranks are only good up to about 550p, until I came across this article:
http://www.chevyhiperformance.com/techarticles/48499_cheap_horsepower_engine_build/
They suggret that as long as you've got good new pistons and forged con rods, the stock cast crank will hold up to 700hp? This is excatly the sort of build I'm going for, so I think I'm now pretty much decided: grind the original crank and throw it back in.
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 5 2006 11:32:58
|
|
|
art b
Posts: 9903
Joined: Apr. 21 2004
From: some where near bling
Status: offline
|
sounds the best option!
save some readys for more up grades
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 6 2006 19:41:42
|
|
|
retrorob
Posts: 799
Joined: Nov. 24 2005
From: United Kingdom
Status: offline
|
looks just like the old shops near the train station
|
|
|
|
|
RE: Finally got the engine totally in bits - Sep. 6 2006 23:14:26
|
|
|
Andy-D
Posts: 464
Joined: Jul. 15 2005
From: United Kingdom
Status: offline
|
quote:
Originally posted by retrorob
looks just like the old shops near the train station
Up on Castle street? i know what you mean!
|
|
|
|
 New Messages |
 No New Messages |
 Hot Topic w/ New Messages |
 Hot Topic w/o New Messages |
 Locked w/ New Messages |
 Locked w/o New Messages |
|
 Post New Thread
Reply to Message
Post New Poll
Submit Vote
Delete My Own Post
Delete My Own Thread
Rate Posts |
|
|
|
Printable Version
But, I did live in Wycombe once (mistake!), and have always lived since in and around South-West London. Dodgy Frank lives near Wycombe, so I get up that way a bit, I was there tonight. Have you seen the truck about?
