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Rebuilding your engine / fixing a blown head gasket
This page is under construction. Please come back later
This page tells you most of the parts I've done on my car / engine during the
winter of 2000 - 2001. I started as an easy job to replace the headgasket, but I
ended up taking everything apart. On this page you see the part list, other
pages on my site will go into more detail on how to fix certain things.
BHG
All cars have problems, and the bad thing about problems with cars is they
turn up when you already got the car for a few years. One of the most known
problems with the Toyota Supra 7M-GTE engine is a blown head gasket. There is
not a good explanation why the head gasket is one of the weak spots of the
engine, but in general we (the Supra enthusiasts) think the designers did not
expect the pressure on the head gasket would be so big to blow it out eventually.
Furthermore the head bolts are of a BAD QUALITY. This would be the main cause
for the BHG. With the constant heating and cooling off of the 7M-GTE engine, the
head bolts will get loose eventually. A re-torque every 100.000 km is strongly
advised. In case you are already too late and have blown your head gasket out,
replace the bad head bolts with better quality ones, for example the ARP head
bolts.
How do you know you have a blown head gasket?
Although for every cause leading to the blown head gasket is another problem feasible,
the general symptoms of a blown head gasket are:
- Engine is overheating on a regular basis, for example after half an hour
on the highway and then standing still for a red light. Note overheating is
not 'in the red' but everything about 3/4 of the water temp gauge.
- You need to add a lot of coolant (or water) because the engine blows out
quite some coolant regularly.
- You hear all kind of weird water running sounds in the engine bay while
driving (this are the exhaust gases in the water circuit)
To prevent a blown head gasket or to put it off for a few more thousand miles,
you can re-torque the head bolts of the engine. This is generally speaking a job
doable in one day and is explained in detail on my
re-torque page.
Things you need / might need for a blown headgasket
When doing the Toyota Headgasket set:
| 1 |
04112-42023 |
Toyota Full headgasket set |
HFL 624,34 |
| This Toyota headgasket set consists
of the following parts: |
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1 |
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Headgasket (Wow!) |
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1 |
17176-42020 |
Gasket air surgetank to intake manifold |
HFL 14,00 |
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1 |
17177-42020 |
Gasket intake manifold to head |
HFL 22,50 |
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1 |
17173-42010 |
Gasket exhaust manifold to head |
HFL 46,31 |
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2 |
11213-42020 |
Gasket cylinder head cover (valve covers) |
2x HFL 23,09 |
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1 |
11328-42010 |
Gasket timing belt cover |
HFL 16,61 |
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1 |
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Elbow -> Downpipe gasket |
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1 |
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Exhaust manifold -> turbo gasket |
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24 |
90913-02062 |
'o' seal or ring for valve stem oil |
24x HFL 14,10 |
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12 |
90210-07001 |
Camcover shims |
12x HFL 3,88 |
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6 |
90301-07001 |
'o' ring for fuel injector |
6x HFL 4,93 |
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6 |
23291-41010 |
Injector vibration insulator |
6x HFL 5,42 |
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6 |
90480-13005 |
Grommet for fuel injector |
6x |
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4 |
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Metal ring gaskets |
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2 |
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Metal ring gasket (black) |
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1 |
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Metal ring gasket |
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1 |
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Metal ring gasket |
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2 |
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Metal ring gasket |
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2 |
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Metal ring gasket |
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2 |
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Metal ring gasket |
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1 |
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Water pump gasket to head |
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1 |
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EGR cooler gasket |
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1 |
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gasket |
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1 |
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gasket |
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1 |
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gasket |
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1 |
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gasket |
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1 |
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thermostate rubber gasket? |
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2 |
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Oil seals for camshaft |
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| 1 |
04175-42011 |
Gasket set for turbo |
HFL 179,64 |
| 24 |
90913-02062 |
'o' seal or ring for valve stem oil |
24x HFL 14,10 |
| 1 |
22271-42040 |
Throttle body gasket |
HFL 7,97 |
| 1 |
22278-42010 |
Idle speed control valve gasket |
HFL 4,10 |
| 6 |
90301-07001 |
'o' ring for fuel injector |
6x HFL 4,93 |
| 6 |
23291-41010 |
Injector vibration insulator |
6x HFL 5,42 |
| 6 |
90480-13005 |
Grommet for fuel injector |
6x |
| 1 |
23293-42010 |
Gasket cold start injector |
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| 12 |
90210-07001 |
Camcover shims |
12x HFL 3,88 |
| 1 |
96721-19010 |
O ring for oil level gauge guide |
HFL 3,39 |
| 1 |
11328-42010 |
Gasket timingbelt cover |
HFL 16,61 |
| 1 |
25628-42010 |
Gasket EGR inlet |
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| 1 |
25627-42030 |
Gasket EGR valve (wrong?) |
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| 1 |
25627-42040 |
Gasket EGR valve |
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When doing the HKS Metal headgasket
| 1 |
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HKS Metal headgasket 1.2 mm |
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| 1 |
17176-42020 |
Gasket air surgetank to intake manifold |
HFL 14,00 |
| 1 |
04175-42011 |
Gasket set for turbo |
HFL 179,64 |
| 1 |
17177-42020 |
Gasket intake manifold to head |
HFL 22,50 |
| 1 |
17173-42010 |
Gasket exhaust manifold to head |
HFL 46,31 |
| 2 |
11213-42020 |
Gasket cylinder head cover (valve covers) |
2x HFL 23,09 |
| 6 |
90919-01145 |
6 new spark plugs |
6x HFL 31,74 |
| 24 |
90913-02062 |
'o' seal or ring for valve stem oil |
24x HFL 14,10 |
| 1 |
22271-42040 |
Throttle body gasket |
HFL 7,97 |
| 1 |
22278-42010 |
Idle speed control valve gasket |
HFL 4,10 |
| 6 |
90301-07001 |
'o' ring for fuel injector |
6x HFL 4,93 |
| 6 |
23291-41010 |
Injector vibration insulator |
6x HFL 5,42 |
| 6 |
90480-13005 |
Grommet for fuel injector |
6x |
| 1 |
23293-42010 |
Gasket cold start injector |
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| 12 |
90210-07001 |
Camcover shims |
12x HFL 3,88 |
| 1 |
16341-35010 |
Water outlet gasket |
HFL 3,88 |
| 1 |
96721-19010 |
O ring for oil level gauge guide |
HFL 3,39 |
| 1 |
11328-42010 |
Gasket timing belt cover |
HFL 16,61 |
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| 1 |
25627-42030 |
Gasket EGR valve to block |
HFL 4,27 |
| 1 |
25628-42020 |
Gasket EGR to intake manifold |
HFL 4,10 |
| 2 |
90311-35017 |
Oil seal for camshaft |
2x HFL 16,70 |
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| 1 |
13568-49015 |
Timing belt |
HFL 116,43 |
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When removing the water outlet from the head
(not needed when replacing head gasket only)
This gasket is normally in very bad condition because of the location
(close to the exhaust manifold) So I really recommend you to replace it! |
| 1 |
16343-42020 |
Water outlet gasket |
HFL 4,58 |
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| Not needed but good to have /
replace |
| 1 |
89466-20020 |
O2 sensor gasket |
HFL 22,60 |
| 1 |
90916-03078 |
Thermostat |
HFL 33,29 |
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| When you resurface the block (not the head, but
the block) you need to remove the two positioning pins in the block. These
pins really cost nothing |
| 2 |
90250-08120 |
Straight pin for cylinder head set |
2x HFL 1,94 |
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| To block of the EGR valve, and remove the EGR
system |
| 1 |
25617-42010 |
hole cover plate for EGR pipe (intake manifold) |
HFL 20,49 |
| 1 |
25615-43020 |
EGR hole cover plate (on the block) |
HFL 11,46 |
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| When removing the fuel return line restriction |
| 1 |
90923-06012 |
Gasket (Fuel pipe support insulator) |
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| When the head is taken of and the cams are out,
it's a good time to replace the gear wheel of the CPS |
| 1 |
19195-42010 |
Gear wheel |
NLG 92,26 |
| 1 |
19127-42010 |
Gasket of the CPS plate |
NLG 4,36 |
| 1 |
90099-14088 |
O ring for CPS |
NLG 4,10 |
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| Some nice parts |
| 1 |
11286-42010 |
Twin Cam 24 valve turbo intercooler plate |
HFL 19,34 |
| 1 |
11291-42020 |
Engine name (7M-GTE) sticker |
HFL 2,42 |
| 1 |
11277-42010 |
Toyota plate on engine |
HFL 4,09 |
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| Things you don't need to buy, unless you break them
or they are worn: |
| 1 |
9017606019 |
Standard part. Nut for the timing belt cover |
HFL 7,67 |
| 1 |
99365-21290 |
V belt for alternator |
HFL 28,77 |
| Parts we need for doing the whole engine
overhaul, so the bottom end as well |
| 2 |
90430-12023 |
Gasket for oil return line to oil pan |
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| 1 |
16347-42010 |
Water bypass gasket |
HFL 4,58 |
| 1 |
90430-27001 |
Gasket oil level sender |
HFL 1,94 |
| 1 |
16124-42020 |
Gasket water pump |
HFL 7,89 |
| 1 |
90430-20010 |
Gasket oil filter bracket |
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| 1 |
96732-31070 |
Gasket oil filter bracket |
HFL 7,89 |
| 1 |
16100-49805 |
New Water pump |
HFL 306,77 |
| 1 |
15318-42011 |
Gasket for oil blockoff plate |
HFL 4,67 |
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| 6 |
13103-42080 |
6 new pistons |
6x HFL 141,17 |
| 1 |
13013-42012 |
One set piston rings |
HFL 610,61 |
| 1 |
13204-42010 |
Con Rod Bearing Set |
HFL 265,64 |
| 1 |
11704-43010 |
Crankshaft bearing Set |
HFL 424,93 |
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| 1 |
11383-41010 |
Gasket engine rear oil seal retainer |
HFL 2,34 |
| 1 |
90311-80001 |
Oil seal |
HFL 70,19 |
| 1 |
90311-42026 |
Oil seal timing gear case |
HFL 17,01 |
| 1 |
90311-52003 |
Oil seal timing gear case |
HFL 33,79 |
| 1 |
11312-42010 |
Gasket front end plate |
HFL 6,04 |
| 1 |
11312-42020 |
Gasket front end plate |
HFL 7,97 |
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| Again some things that might need replacement,
depending on the state |
| 1 |
11361-45010 |
Flywheel housing cover (might be bend) |
HFL 92,73 |
| 1 |
32101-14052 |
Drive plate & ring (gear sub-assy) |
HFL 381,79 |
| 1 |
16283-42010 |
Water bypass hose no. 6 |
HFL 34,19 |
| 1 |
90915-20001 |
Oil Filter |
HFL 23,68 |
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| If you want to fix / replace
the most important gaskets of the power steering pump |
| 1 |
96711-19013 |
O-ring power steering suction port |
HFL 5,07 |
| 1 |
90301-13004 |
O-ring for vane pump side plate (rear) |
HFL 3,97 |
| 1 |
90301-30004 |
O-ring for vane pump side plate (rear) |
HFL 7,97 |
| 1 |
90301-63002 |
O-ring No1 for vane pump housing |
HFL 9,12 |
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| Jobs you cannot do yourself |
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Machine the head |
HFL 105 |
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Have things cleaned (sand cleaning / blasting) |
HFL 500 + HFL 120 |
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Lighten the crank |
HFL 1150 |
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Surface the block |
HFL 125 |
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Hone the block |
HFL 220 |
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Balance the crank |
HFL 275 |
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Clean oil lines crank and block |
HFL 125 |
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Balance the rods & pistons |
HFL 240 |
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Clean pistons |
HFL 180 |
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Measure the crank to be within specs |
HFL 160 |
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Supra 
