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Baja Forums -:- AzBaja.com Members -:- Projects and Builds -:- Project-rebuilding 1915cc.
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Project-rebuilding 1915cc.
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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Fri Mar 19, 2010 02:35 PM
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Ok, I know this is the place to get accurate & top notch advice. I'm redoing BugLif's motor. I'm replacing the 69 counter weighted crank with an 82. I'm keeping the w140 cam and the 044 heads. I'm wanting to use the stock length rods. I'm buying a set of stroker pistons but I'm unsure of which compresion to get so I can run on good pump gas & get beter milage then the 8 I was geting? I had 10.05:1. So what would be a good compresion piston for project rebuild? And is it realy ok to run the stock length rods on my new project?

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perrib
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Sat Mar 20, 2010 02:45 PM
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I used properly prepped race prepped stroker stock VW rods for many years. Gene Berg and Rimco still build them. For ease of installation use a DPR race weight 82 mm or 84 mm crank and CBs 5.4 " H beam rods with 3/8 ARP 2000 rod bolts. This will require less case clearancing. My 86 mm crank with Pauter rods fits in the case clearanced for my 82 mm crank with race prepped VW rods. You might want to send those 044s toSteve Tims (www.performance-workshop.com) to make sure they are up to handling the extra displacement. Setting the compression ratio in the 9.0/9.5 to 1 should work.

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DONT
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Post Post subject: Project-rebuilding 1915cc.
Posted: Mon Mar 22, 2010 09:28 PM
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To add on from Perri, the compression is set by deck height, and head combustion chamber volume


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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Tue Mar 23, 2010 03:15 AM
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I'm learning the vw motor. Would I be better off money wise to use the 78mm crank? I'm thinking that I can use the rods & pistons that I have now? Theres a lot to this vw stuff...lol. I'm looking to have power & be fast, real fast. And yet have it a bit more streetable. I'd like to have power in the low rpm all the way to like atleast 7000, 7500 RPM. I don't want this to be a trial n error thing. I thank you folks for the info. A lot of you guys really know your stuff. You guys take the guess work out of it, Thank you "DONT" & perrib.

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az350x
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Tue Mar 23, 2010 02:00 PM
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BugLife wrote:
I'd like to have power in the low rpm all the way to like atleast 7000, 7500 RPM.

7,000 RPM? Holy SHNIKEYS! My 1915 red lines at about 5,600 I think, but I start cringing at 3,500! I'm not sure my motor has even seen 4,000 rpm, honestly. Wow.


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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Tue Mar 23, 2010 02:21 PM
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My 1915 red-lined at like 8000. It had counterbalanced 69mm crank, lightened flywheel, 10.05:1, 94mm boar, engle w140 staright cut cam and dual 45 dell's. Hard to drive on the street as ya had to keep the R's up. 8 miles to the gallon. I kicked the turds out of them 5.0's and some Vetts. I'd lower the tyer pressure on a warm street and pulled the wheels in first & second. I want to do better and yet make it more streetable. Holy SHINKEYS!!!! lol

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perrib
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Tue Mar 23, 2010 05:11 PM
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8 mpg! better educate that right foot as it must only know the WFO throttle position. Cruising down the highway it should get 22-25 mpg in the 3-4 k rpm range.
If your using stock rods that are not race prepped by Rimco or Gene Berg your engine is living on borrowed time. "Prepped" stock rods with a 78 mm crank will take 10,000 rpms for a day of drag racing. Even bolted to an 82 mm crank they last for years with a 6500 rpm redline and still hold up to the occasional stuck throttle missed shift.
If you do not build a stroker that is going to use a 140 cam correctly expect it to self destruct in a very short time. Stress goes up as an exponential function of rpm. Adding stroke only exacerbates the problem.

An 84 mm DPR crank is only $60 more than the 78 mm crank. That $60 will do a lot of taming on the W 140 cam. Spending $540 for a 82 mm or $560 84 mm DPR crank with Chevy rod journals and $240 for CB H beam rods saves money and time.
The heavier race crank will make more power and not pound out center mains like the cheap ones do because it does not flex. As long as you blue print all your tolerances to the loose end of the VW specs. (opposite for the oil pump) balance all the parts and assemble correctly it will return many years of service. The crank rods and case for my 2180 are 19 years old and have not been remachined. I have a post on AZBAJA about blue printing a 2387 stroker engine.
www.azbaja.com/ForumsP...=2386.html

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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Tue Mar 23, 2010 09:00 PM
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Yes, I have a heavy foot. Lots of beefed up V-8's around Canton, OH. And I love to leave them in the dust of a Baja....lol. I've pretty much read all your post Perrib. Your a walking book of air cooled info. I value your info very much and take heed to your advice. I have to sell my boat so I can afford all the new stuff. As I build you can bet I'll get back to you. I'm going to search your post on blue printing a 2387. Thanks perrib.

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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Tue Aug 10, 2010 08:43 AM
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perrib, I finally got this shit right. La Products in Akron, Ohio helped me alot. Your info was a great help. Money was funny so took me way longer then I thought. I will start it up tomarrow and give it the run in time and then I would love to go visit Grunt over in Massillon, Ohio. I did drop the compression back to 9.05:1. I'm told this will run on pump gas ? I had it set at 10.05:1. added 40thousands shims under the jugs. I still think your a walking book of knowledge when it comes to VW's. Love to meet you some time, perrib. Seen yer sh** on youtube......great camera work for an 11 year old. We don't have land scape like that around here. perrib, Grunt will say it all, I'm gona go meet him and put him behind the wheel. He's been here for some time without a Baja or Bug for tooooo long. I think he's ready to experience some serious BUG power....lol....atleast for Ohio, Canton/Massillon.

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perrib
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Tue Aug 10, 2010 02:40 PM
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Your going to like it. A 140 cam in a 2276 makes better bottom end torque compared to the 1915. Don't forget you might need to adjust your jetting.

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Grunt-0341
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Wed Aug 18, 2010 01:46 AM
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BugLife wrote:
perrib, I finally got this shit right. La Products in Akron, Ohio helped me alot. Your info was a great help. Money was funny so took me way longer then I thought. I will start it up tomarrow and give it the run in time and then I would love to go visit Grunt over in Massillon, Ohio. I did drop the compression back to 9.05:1. I'm told this will run on pump gas ? I had it set at 10.05:1. added 40thousands shims under the jugs. I still think your a walking book of knowledge when it comes to VW's. Love to meet you some time, perrib. Seen yer sh** on youtube......great camera work for an 11 year old. We don't have land scape like that around here. perrib, Grunt will say it all, I'm gona go meet him and put him behind the wheel. He's been here for some time without a Baja or Bug for tooooo long. I think he's ready to experience some serious BUG power....lol....atleast for Ohio, Canton/Massillon.

I can't wait for the day I drive it Buglife. Very Happy It will be a blast seeing what a hot bug can do. Blowing off Vettes and 5.0 Stangs has to be crazy Laughing Laughing Laughing You're right I've gone too long without a Bug Sad And as always Kudos to Perrib for his vast engine knowledge.


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BugLife
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Post Post subject: Project-rebuilding 1915cc.
Posted: Wed Aug 18, 2010 06:49 AM
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Engine is togather and ready to pump oil and start. Got to late today to start it, neighbors trying to sleep.....lol. I just have to take some clips of Grunt....wish I was in the position to just help him get a Bug. Will post lator. Thank you all for your support and knowledge.

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Grunt-0341
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Post Post subject: Re: Project-rebuilding 1915cc.
Posted: Sun Aug 22, 2010 10:04 PM
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That's great that you got it all together Cool Give ma a call (you'll have to leave a message) or PM me and I'll call you so that we can set up a time to meet and get the video shot. If you were in the position to help me get a bug I'd count you as an outstanding friend. Helping a fella that is low on funds is always worthy of gratefulness. Very Happy


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