Threw rod, have a question on 6 bolt swap

[Bryce68]

Allright here's the deal, I threw a rod on my '96 Talon TSI. it knocked for about half a minute very mildly on the interstate, I was NOT beating on it or anything, just crusing. I turned around to head back home, and all of a sudden it got LOUD, so I quick pulled off and shut it down ASAP. Towed it home, opened it up, #4 rod let go, pieces of rod and rod cap laying in oil pan, filings everywhere. Upon further inspection I found one of the rod cap bolts in near perfect shape and one nut in absolute perfect shape, and that about sent me through the roof. Punched a hole in the block, but head is fine thank god so I can at least salvage that. Crank and block are junk. I've never touched the bottom end on this thing, and I just bought it in september and have only put about 2500 miles on it since then. Now the question is, I called a salvage yard and they just got in a '93 laser nonturbo, those things have the 1g 6 bolt I'm looking to swap in right? My now junk 7 bolt block showed no signs of crankwalk, but I don't really want to put in another 7 bolt block and run the risk, and I can't find one anyways so it doesn't matter. I'm going to look at the laser today or tomorrow, and was wondering if there was anything in particular I should be looking for. Thanks.

 

[90TTalonAWD]

first off, the engine in the nonturbo laser is a 4g63, but it is not built like the t4g63 that you had in your car. Your best bet to do a 6-bolt swap is to get a true 6 bolt shortblock from a salvage yard, or any other place for that matter. Should run you 300 bucks. Then you will need more parts to convert it to 6 bolt, search these forums for the 6bolt swap there is alot of dicussion.

If i were you, i would check to see the condition of your pistons. The 2g pistons are better than the 1g and the 1g rods are better than the 2g, so i would get a 6bolt block and have it built with 1g rods and your 2g pistons for a very strong budget motor. I'll be happy to answer any further questions you have.

 

[90TTalonAWD]

http://www.slowboyracing.com/shop.php?sid=&cat=53

there is the kit to change over to the 6bolt. pricey but a good investment so that you will have a strong engine with little chance of crankwalk.

http://dsmtuners.com/forums/showthread.php?t=152329

there is an article on the 6 bolt swap. read through it to get an idea of what you have ahead of you.

 

[DSM007]

90TTalonAWD has ya on the right path already there......reason he is saying to use a turbo block is that there is no oil squirters that squirt the bottoms of the pistons and I dont think(If I remember right)there isnt a tapped hole either for the knock sensor in the back on NON turbo blocks....and I too recommend to run the 1G big rods with 1995 or newer pistons because of the higher 8.5 to 1 compression vs the 7.8 to 1 compression of the 1G pistons,plus not to mention they are a little bit stronger of a piston too....it only costs like 100 bux to machine the rods to fit the pistons.

 

[JayRolla]

The 1g pistons are just as strong. You can run a lot of boost with the lower compression, which is great for pump gas. The non turbo block can be used, I think people use them without the squirters with high success, or they add them in I cant remember. There is a spot on the rear of the block you drill and tap for the knock sensor.

 

[90TTalonAWD]

i think that getting the non turbo block is just a bad idea. even without the oil squirters and the knock sensor, he is still running stock nt internals with high compression he would but his t-25 back on at the stock 11psi and blow his motor instantly. The 1g pistons aren't terrible, they are just weaker than 2g. Same with 2g rods being weaker than 1g.

 

[Bryce68]

Damn, that is not what I wanted to hear...this is THE ONLY engine I have found locally after calling 4 or 5 places. Nobody even had anything until I called this place. I can get the whole 6 bolt turbo engine on ebay for 550 bucks, but they want 200 to truck it here, and I wouldn't be able to see the engine in person before buying it. My buddy does know a guy that races and builds dsm's and evos locally so I might give him a call. Money is kinda tight right now so I am definitely on a budget. Thanks for all the help and advice, it's greatly appreciated as I am still fairly new to dsm's, but am learning them quick.

 

[Bryce68]

Also, the magnus motorsports link is dead which goes into detail about the driver's side engine mount. VFaq have anything?

 

[Bryce68]

Well I got the 7 bolt engine out tonight along with the tranny..would still appreciate it if someone would explain to me how to modify my driver's side engine mount for the 6 bolt. VFaq links to magnus motorsports as well..it's a pdf file and I do have acrobat but for some reason it won't let me open it up. Thanks a lot.