80 replies to this topic

[Project_1275_GT]

Thought I would post some pictures of my 998 engine that I have started to rebuild. This engine has been laying in the corner of my garage for some time now. I stripped the gearbox off it at the beginning of my 1310 Turbo project as I believed it had a 3.1 final drive. It wasn't. 

 

I have stripped the engine today and it looks pretty respectable. Found a snapped ring on piston 4 but no damage to the bore. Have checked the bores and they all look good. As I said above the gearbox was removed earlier this year and stripped. 

 

 

 

Here's some pics so far 

 

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Attached Files

•  IMG_1977.JPG   51.74K   2 downloads

Edited by Project_1275_GT, 26 November 2020 - 03:50 PM.

[Maccmike8]

Il be following this with interest.

[Project_1275_GT]

Managed to get some more done. sorted loads in the garage today. All ready to blast a few parts in the next few days. 

 

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[johnv]

What's that you used to get the idler bearing out?

[Project_1275_GT]

What's that you used to get the idler bearing out?

 

Its a home made tool. 2 heavy duty washers with flats filed on the side to fit into the old bearing outer ring. Washers are to big to fit in unless the flats are filed. think they were 16mm washers. 1 normal 10mm nut, 1 length 10mm studding with two nuts locked together. 1 large socket. place the single nut in the hole where the outer is, place two washers with flats on the nut, screw the studding into the loose nut at the bottom of the hole, place the large socket over the bearing outer, add washer and nut to tighten, add two lock nuts to top of studding, heat the back end of the casting with blow torch, tighten nut against socket and out it comes. 

 

without the heat it does not work. tried a couple of times without heat as my blow torch kept turning into a fire ball.. Gave in and went a got a new torch and came out easily. 

 

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For the other outer i used heat on rear of casing, old screwdriver to tap under bearing outer, then more heat, then larger chisel under bottom face when lifted enough. 

 

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[Project_1275_GT]

Did a bit more 

 

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[Maccmike8]

Do you do the gasket faces too?

[Project_1275_GT]

Do you do the gasket faces too?

 

Yes did the gasket face. Fine glass blast

Edited by Project_1275_GT, 28 October 2020 - 08:09 PM.

[Project_1275_GT]

Few more bits done last night 

 

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[Project_1275_GT]

Been busy again. Taken the block and head to Rob Walker today for cleaning and rebore. Although the bores were hardly worn I was advised to bore and hone as the end result would be better and last longer. So taking that advice i headed off to mini spares and got some new pistons and rings. Now 998 +20

 

Now just need to order the rest of the bits and get busy in the garage. 

 

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[Project_1275_GT]

I will make some more updates to this engine build in the next week. The block and head are ready for collection from machine shop. 

 

 

 

Edited by Project_1275_GT, 11 November 2020 - 12:11 PM.

[Bobbins]

You have mail regarding the cylinder head.

 

Stu.

[Project_1275_GT]

More progress with the engine. Block back from machining. Cleaned a bit more - replaced cam bearings and getting ready for paint 

 

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[Bobbins]

You need to address a weight balance issue ... drink the 4th can :))

[Project_1275_GT]

You need to address a weight balance issue ... drink the 4th can :))

 

Dont worry its well balanced now.. :)