6 bolt vs. 7 bolt [merged] 6bolt 7bolt 6-bolt 7-bolt six bolt seven bolt

[asdfzxc]

All 6 bolt vs. 7 bolt threads are merged here.
How do I tell if I have a 6 bolt or a 7 bolt?
Will x part from a 6 bolt fit a 7 bolt?
Will x part from a 7 bolt fit a 6 bolt?
Which one is better?
How do I swap my x bolt for an x bolt?

What is the difference between 6-bolt and 7-bolt engines (aside from the obvious - 6 vs. 7 bolts connecting the flywheel )

Is there an advantage over either of the two engines?

Thanks,

-Mike

 

[calcifer]

How much are you planning to spend? You should be able to find a 6 bolt for less than $2500, might be a '90, or '91 though. AWD or FWD?

 

[la-panocha]

Crankwalk isn't near as bad(as often) as what people might think.

There shouldn't even be the question of FWD or AWD. If your looking for fun i'd go with a AWD.
You can do the 300+HP in a FWD but either be alright with wheelhop or spend a few extra hundred in suspension... hell my old (basically stock)96 spyder gs-t had wheel hop like mad and that was from a bad front motor mount.

 

[SpyderP8ntball0]

Well I'm looking to spend maybe anywhere between $3000 to $3500. I think that I am going to end up with the 93 AWD. How much horsepower can these cars take without very many problems. I know that obviously if your hard on a car its going to have problems. But will I run into any expensive things with the 93 7 bolt main? And I have heard that the transmissions arent the best in them. How much does it cost to upgrade the transmission?

 

[SpyderP8ntball0]

Well I'm looking to spend maybe anywhere between $3000 to $3500. I think that I am going to end up with the 93 AWD. How much horsepower can these cars take without very many problems. I know that obviously if your hard on a car its going to have problems. But will I run into any expensive things with the 93 7 bolt main? And I have heard that the transmissions arent the best in them. How much does it cost to upgrade the transmission?

 

[fwdturbobov1996]

double post owns u. Our trannys can take a good deal of power. Really the " borderline " turbo on our cars is the big and evo 3 16g. If you go any bigger you usually run into lots of problems. Still expect problems with that turbo, yet alone when the car is stock.

Also the price really varies. If you go with a john shepherd racing tranny.. www.shepracing.com .. its 2k. Everyone runs that transmission b/c well its the best. Stock rebuild isnt near as expensive but the shep tranny will hold alot more and longer.

 

[Defiant]

We really do have a surfeit of currently-open crankwalk threads.

 

[frosh29]

ok.......

here is my question.....

if 1gb owners like myself that are stuck with a 7 bolt engine only need to replace the flywheel, why does slowboy sell the kit for the 1gb's and 2g's at the same incredible low low price of $1300. I have even called them for info on the swap only to get the "u need to buy the whole kit" answer.

if i knew that all i needed to do was to get a flywheel for my 7 bolt 1g to swap a 6 bolt in, it would have saved me so much time and money.

the lack of info on the subject though, cause me to go a different route.

just thought this thread was interesting.

- Scott

 

[eclipse-gst339]

what do i have to do to make my 7 bolt pistons fit in my 6 bolt block

 

[ECLIPSE4x4]

There are a lot of things you can do, first pull them out of your 7 bolt.....

7 bolt pistons will fit a 6 bolt block.

If you want a better answers, be more discriptive with your question. Like we have said before. If you don't have the time to create a complete though, people on here do not have time to make a complete answer,

 

[eclipse-gst339]

sorry i meant i heard i would have to do something to my 6bolt rods or something to get them to fit . is this true? can i use my 6bolt rods? or do i have to use my 7bolt rods? thnks alot

 

[ECLIPSE4x4]

You really need to use the search function!!!!!


Yes, you can use 2G pistons on 1G rods, you need to have them machined though.

You can find the specs o here yourself. I am too lazy to find it for you.

 

[eclipse-gst339]

ok thats what i thought i was lookin for specs but could not find them but ill keep lookin thanks alot

 

[92awddsm]

The 1gb 7 bolt to 6 bolt swap only requires the 6 bolt flywheel. All the mounts and sensors are the same(the 7 bolt has the black top cas which will work fine on the swap) and the head and intake are the same as a 6 bolt. Basically, all you really need is the 6 bolt short block and flywheel but if you get the head also, all your original parts will work on it. I know this for a fact because I had a 93 tsi and still have a 92 tsi and everything was the exact same except for short block, flywheel, and cas. I also built the engine in both myself so I was able to compare parts to see the real difference for my self. And contrary to popular belief, the water cooled oil filter housing is even the same. I installed my stock 6bolt housing on my 7 bolt because the 7 bolt was contaminated with metal shavings and I was just too lazy to clean it when I already had a clean one sitting.

 

[Spoolin4Ever]

Yeah, it's here somewhere, I saw it. Sorry I don't have the link. But basically, the 1G rod has to be machined. There is a post here I believe, where there is an image attached. I saw it somewhere.

If anyone knows you should tell him, don't be an ass and tell him he doesn't provide enough info. He has. He wants 2G pistons on 1g rods, it's a straight forward question.

By the way, you did ask it the wrong way though, cause a 93 or 94 is also a 7 bolt, but it has 1G pistons

 

[lifeisviewtiful]

hey i just went to pick up the eagle talon i bought yesterday. i am looking for a bottom end(block) for it. how do i know if it is a 6 or 7 bolt. because i can get a 6 bolt right now for 150 and i want to act fast.

 

[formulacyclone]

6 bolt has 6 crankshaft bolts, where the flywheel goes, 7 crankshaft bolts on 7 bolt ..
what year car do you have ??

 

[logic]

I'm not sure if you're asking if you currently have a 6-bolt or whether you're wondering if the engine you're buying is a six-bolt.

Either way, VFAQ.com has a quick guide to visually telling the difference between a 6-bolt and 7-bolt engine while it's still in the car. If it's out of the car, count the number of bolts securing the flywheel to the crank.

And more specifically, if this car is the 91 Talon in your profile, it's a 6-bolt.

 

[lifeisviewtiful]

oh ok...it is a 91 talon, so i guess it is a 6 bolt.

 

[olmytsi]

90-92.5= 6 bolt
92.5-99= 7 bolt

 

[ECLIPSE4x4]

Yeah, it's here somewhere, I saw it. Sorry I don't have the link. But basically, the 1G rod has to be machined. There is a post here I believe, where there is an image attached. I saw it somewhere.

Yet you want to elude to the point that "I" am an ass because I didn't take the time to find the layout on how to machine the rodas for him and give him the answer. Yet you posted with no answer.. who's the ass here?

If anyone knows you should tell him, don't be an ass and tell him he doesn't provide enough info. He has. He wants 2G pistons on 1g rods, it's a straight forward question.

Let me give you a little quote on the rules page:

When Asking/Answering Tech Questions:


Be sure you've done research on the question before you ask. This site has been around a while now, and most of the basic questions and topics posted by newbies have already been covered here and in other DSM resources. Nobody here wants to answer the same questions over and over again. We've put together a list of links that should answer 95% of all DSM questions you might have in one of these areas:

DSM Frequently Answered Questions Forum
Tech Guide & Upgrade Paths
Parts Catalogs
Forums Keyword Searches
How to Use the Search Feature Effectively



If you have anything further to say to me, use the PM function and leave me a message at the beep...."BEEEEEEEEEEEEEEEEEEEEEEEEEP"

 

[logic]

While you guys were busy pissing in each other's wheaties, I decided to actually go look this up for the fellow who posted originally.

Courtesy of a local fellow and DSMTuners member and VFAQ, here you go: http://hometown.aol.com/rcm1061/myhomepage/auto.html

Take that to your machinist.

 

[eclipse-gst339]

thanks alot logic. i really appreciate it i still don't know exactly how this site works

 

[frosh29]

The 1gb 7 bolt to 6 bolt swap only requires the 6 bolt flywheel. All the mounts and sensors are the same(the 7 bolt has the black top cas which will work fine on the swap) and the head and intake are the same as a 6 bolt. Basically, all you really need is the 6 bolt short block and flywheel but if you get the head also, all your original parts will work on it. I know this for a fact because I had a 93 tsi and still have a 92 tsi and everything was the exact same except for short block, flywheel, and cas. I also built the engine in both myself so I was able to compare parts to see the real difference for my self. And contrary to popular belief, the water cooled oil filter housing is even the same. I installed my stock 6bolt housing on my 7 bolt because the 7 bolt was contaminated with metal shavings and I was just too lazy to clean it when I already had a clean one sitting.

Thanks very much for the very very informative post!!!!! there is hope for my engine yet!!!

 

[rkarkosh]

I have a set of rods and pistons I thought were 6 bolt, but now I'm not sure. The pistons have the usual turbo designation on their faces but also have F1 embosed (my '92 Talon does not have F1). I have recently seen photos of 7 bolt pistons with the same F1. My question is how can I tell what engine the rods are from. Even if the pistons are 7 bolt, the rods might be 6 bolt modified to fit them. I appreciate any help. Thanks

 

[bloc]

if i remember correctly the rod bolts on 6 bolt big rods use a 14mm nut, and the ones on 7 bolt small rods use a 12mm nut. it has been some time since i worked on a 7 bolt though