Motor Vehicle Maintenance & Repair Stack Exchange
Motor Vehicle Maintenance & Repair Stack Exchange

Questions tagged [block]

21 questions
5
votes
1 answer

Block flatness tolerance?

2006 Solstice (says hello). The engine overheated for some reason, going from ~200F to ~300F in a matter of seconds. (Actually, the gauge changed directly from 203F to 298F.) The head is over at the machine shop getting milled and a valve job. They…
3Dave
  • 3,159
  • 3
  • 25
  • 39
5
votes
1 answer

Head studs' threads larger length: problematic issue?

As I'm getting ready to (finally!) re-assemble this old engine (Skoda Estelle/120 '70s, RWD, rear mounted engine), I needed/wanted to change a few studs, but basically all of the head studs are damaged somehow. So I went deeper and got made all…
Aram Alvarez
  • 3,376
  • 4
  • 22
  • 43
5
votes
2 answers

Do any new cars come with cast iron engine blocks?

I am thinking that all manufacturers have switched to aluminum as the material of choice for engine blocks. I could not find any sources to confirm this. Do any new cars come with steel engine blocks?
Dan Z
  • 299
  • 1
  • 5
  • 15
5
votes
2 answers

When to bore a block during a rebuild?

While reading this question about a motorcycle cylinder and piston, the question comes to mind basically for the same thing, only for an automobile engine. With this in mind, my questions are: When should you bore a block during a rebuild? How do…
Pᴀᴜʟsᴛᴇʀ2
  • 165,084
  • 32
  • 259
  • 508
4
votes
1 answer

Why are sheet metal engines not popular?

What are the reasons engines use casting and not stamping when manufacturing blocks and heads? There were couple of stamped engines before but none of them took off. https://www.macsmotorcitygarage.com/1946-49-crosley-cobra-the-sheet-metal-engine/…
Timothy Scherer
  • 839
  • 8
  • 15
4
votes
1 answer

Should I lube the engine block bore before inserting a metal tube?

Consider: A new flange inlet tube (number 2 in the photo) need to be inserted into the engine block's bore (cast iron). Is it okay to apply a thin layer of silicone grease (against rust) on the walls of the bore before inserting the metal tube?
xchcui
  • 197
  • 3
3
votes
1 answer

Engine Rebuild for BMW N54

I recently opened up my machined block I got back from the shop I’m pretty sure everything is okay, then again I’ve never rebuilt an engine. Before I put the MLS head gasket on i cleaned the block surface with brake clean and a rag which left white…
Muhammad Durrani
  • 43
  • 3
2
votes
1 answer

Is it possible to damage internal engine using a substitute crank locking pin?

I have a crank pin cavity that is 9.5mm. I have a screw-driver I'm using as a pin, with shaft that is 6mm in diameter. I want to be sure that the pin width is sufficient to lock the engine whilst I loosen the crank pulley bolt. Is there a general…
Jim
  • 461
  • 4
  • 11
1
vote
0 answers

Cylinder head and block replacemnt

Wonder if you could help. I have a 1988 fiat ducato highwayman. My motorhome was taken into an expert engine services garage. The original problem was cylinder head gasket. The garage removed the head and sent it off to be skimmed, They next rang ne…
Flicker
  • 11
  • 3
1
vote
1 answer

Chevy 327/350 block

I’m wanting to swap a 305 with a 327 in an El Camino, had a 68-69 327 long block but the block turned out to be cracked so I kept the crank (2 piece rear main seal), pistons, rods and heads from it and I believe it should be a large journal crank. I…
Jod
  • 101
  • 1
  • 5
1
vote
0 answers

block test positive but leak down doesn't find any issue

My Jeep has been losing coolant before and after replacing a leaky radiator. block test proved positive for combustion gases but the dealer doesn't find an issue with leak down test. there is not coolant in the oil and vice versa. Does anyone know…
John Good
  • 11
  • 2
1
vote
0 answers

Is this engine block salvageable?

My 1991 Toyota Starlet, EP81, 2E was run into the red and the radiator exploded. The head gasket was actually blown long before this point, but I only realised the symptoms after this catastrophic event occurred. I've stripped the engine down to…
Scarlet Starlet
  • 71
  • 1
  • 1
  • 5
1
vote
2 answers

If a car has a rod knock what is no good the head or the block?

Wondering if the block or head can still be used?
Chris
  • 11
  • 1
  • 1
  • 2
1
vote
1 answer

Honda civic 03 overheating, checking the cylinder head and block for cracks?

I have 150k on my 03 Civic it has overheated several times. I can drive the car around town without it overheating, but when I drive it on the highway for an hour and it will overheat. I thought I had a blown head gasket turns out I do not. I pulled…
yre
  • 163
  • 2
  • 4
  • 9
1
vote
1 answer

2004 Pacifica overheats

Heater core had completely busted Coolant leaked into car floor on driver's side Had the heater core fixed Car wasn't flushed out Engine oil empty Engine oil mixed into the coolant Caused a blockage. Question: Where is the blockage…
C. Hoffman
  • 11
  • 2
1
2