Cylinder Head Bolts - 80 Series 4500

Submitted: Tuesday, Mar 14, 2006 at 21:23
ThreadID: 31741 Views:2352 Replies:6 FollowUps:4
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Hi All,
I need some urgent help with the head reco l have underway.

Engine is stripped down to the head bolts being undone. BUT they dont look like conventional bolts.
I think they are a 12 spline fastner, NOT a double hex.

Has anyone come across this before? I'm pulling my hair out, as the head is bookedinto the engine shop in the morning and l don't have a correct tool to undo them!!!

Urgent help please.
BoB

(ps l did an archive search,it turned up zilch!

)
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Reply By: Derek from Affordable Batteries & Radiators - Tuesday, Mar 14, 2006 at 21:34

Tuesday, Mar 14, 2006 at 21:34
Most of the Toyota bolts require a good quality multi spline socket. You cant use a standard hex socket.

I have not had any problems removing them with a standard Repco socket set.

Regards Derek.
AnswerID: 160522

Follow Up By: Billowaggi - Wednesday, Mar 15, 2006 at 00:04

Wednesday, Mar 15, 2006 at 00:04
Yea, standard double hex 12mm socket does the job. Make shure you use new bolts when you re fit the head.
Regards Ken.
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FollowupID: 415358

Reply By: Beast of Bodmin - Wednesday, Mar 15, 2006 at 07:21

Wednesday, Mar 15, 2006 at 07:21
Thanks for the replies fellas.
Your responses do not concurr though, so my dilemma still exists.
Think l'll take a trip to repco and check out new bolts and what type of head they have.
BoB
AnswerID: 160581

Follow Up By: nickoff - Wednesday, Mar 15, 2006 at 09:11

Wednesday, Mar 15, 2006 at 09:11
Have has similar problem previously.
Internally splined head bolts in lieu of external hex head.
"borrowed" correct tool from a work shop for the day. Cost me 1/2 a box

Just a suggestion.
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FollowupID: 415410

Reply By: Beast of Bodmin - Wednesday, Mar 15, 2006 at 18:56

Wednesday, Mar 15, 2006 at 18:56
Update So Far (For archive search!)

Double checked with the engine reco mob, they are a double hexagon NOT splined. So l bought an new good quality socket and a bloody long knuckle bar.

They all cracked off ok and didn't mangle any heads, which was my main concern. The new bolts supplied with the reco will be the same pattern head too.
Bursons 24inch knuckle bar was $50 - good purchase.

BoB
AnswerID: 160705

Reply By: Patroleum - Wednesday, Mar 15, 2006 at 21:07

Wednesday, Mar 15, 2006 at 21:07
Beast of Bodmin,

i've got the same fuel miser! Just curious why the head is coming off?

Greg
AnswerID: 160758

Follow Up By: Beast of Bodmin - Wednesday, Mar 15, 2006 at 22:50

Wednesday, Mar 15, 2006 at 22:50
G'day,
The car has been running lpg all its life, has done 330,000km and there is no valve clearance left.

Poweris noticeably down and fuel usage is up. Last lpg tank gave 31litres/km!!!

Just had to bite the bullett and do it.............
BoB
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FollowupID: 415563

Reply By: Patroleum - Thursday, Mar 16, 2006 at 21:33

Thursday, Mar 16, 2006 at 21:33
Beast of Bodmin ,

Sorry to pester you, but your engine situation is interesting to me as I havethe same engine also on GAS. Mine has done 280000ks and i had gas fitted last year and has probably done 10000 since fitting. I checked the valve clearance recently - all in specs but some exhaust valves at minimum. I have a flashlube upper cyl lubricator and hope this will prevent valve seat recession. Did you have an upper cyl lubricator and is this the first time the head has been off in 330000ks.

Just curious

Greg
P.s. LPG use is approx 20l/100 HWY and prob 23l/100 City. Manual with 285/75 tyres.
AnswerID: 161020

Follow Up By: Beast of Bodmin - Friday, Mar 17, 2006 at 06:40

Friday, Mar 17, 2006 at 06:40
Hi Greg,

I got a call y'day arvo from the emgine rebuilder that the head is in poor condition. They can see excessive corrosion visually!

The deal is that my head is non-repairable. They suggest either a brand new - built with same lpg rated valves & seats or a wrecker's yard head and rebuild that.
New cost would be $4000, used $2500. Toyota price new (but loose parts) is $3650 + build $700.

Looking around for other ideas too, rebuild original head with bolts & gasket, say $700 then sell car (not preferred). Or check the wrecker's head (say $150), fit & wait till it deteriorates then have the same discussion again??

My car has a 10yr old gas installation, has clocked 330,000km.1FZFE engines hate gas, l heard the upper lube helps, but haven't got it as the cost of wkly use is excessive. Also run 285/75 & auto.

Cheers
Bob
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FollowupID: 415791

Reply By: Patroleum - Friday, Mar 17, 2006 at 21:00

Friday, Mar 17, 2006 at 21:00
Hi Bob,

Nasty surprises indeed.
My thoughts are:
If you go new , ring the dealer that messaged you on the latest thred. Try Ballarat Toyota, they advertise in 4wd trader and do some great deals on engines (Mostly Diesel). Or if you go used, my understanding is that these 1fzfe engines are worth 2000 - 2500 used. A good used eng might be the go. As to the valve lube, i use Penrite upper cyl lube $9.95 a litre, not too costly and cheaper than flashlube, would like to pick up a 5 litre bottle wholesale from penrite or similar if possible (Or maybe a 20L) as i'm keen to keep my 80 for 5 years more or so. Good luck with the repair, hope it doesn't end up costing you a fortune.

Regards

Greg
AnswerID: 161231

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